diff --git a/TSPL.docc/GuidedTour/GuidedTour.md b/TSPL.docc/GuidedTour/GuidedTour.md
index e3056e351..f38efe6a1 100644
--- a/TSPL.docc/GuidedTour/GuidedTour.md
+++ b/TSPL.docc/GuidedTour/GuidedTour.md
@@ -255,7 +255,7 @@ occupations["Jayne"] = "Public Relations"
   ```swifttest
   -> var fruits = ["strawberries", "limes", "tangerines"]
   -> fruits[1] = "grapes"
-  ---
+
   -> var occupations = [
          "Malcolm": "Captain",
          "Kaylee": "Mechanic",
@@ -317,7 +317,7 @@ let emptyDictionary: [String: Float] = [:]
   ```swifttest
   -> let emptyArray: [String] = []
   -> let emptyDictionary: [String: Float] = [:]
-  ---
+
   -> let anotherEmptyArray = [String]()
   -> let emptyDictionary = [String: Float]()
   ```
@@ -432,7 +432,7 @@ if let name = optionalName {
   -> var optionalString: String? = "Hello"
   -> print(optionalString == nil)
   <- false
-  ---
+
   -> var optionalName: String? = "John Appleseed"
   -> var greeting = "Hello!"
   -> if let name = optionalName {
@@ -658,7 +658,7 @@ print(m)
      }
   -> print(n)
   <- 128
-  ---
+
   -> var m = 2
   -> repeat {
          m *= 2
@@ -1132,11 +1132,11 @@ class NamedShape {
   -> class NamedShape {
          var numberOfSides: Int = 0
          var name: String
-  ---
+
          init(name: String) {
             self.name = name
          }
-  ---
+
          func simpleDescription() -> String {
             return "A shape with \(numberOfSides) sides."
          }
@@ -1202,17 +1202,17 @@ test.simpleDescription()
   ```swifttest
   -> class Square: NamedShape {
          var sideLength: Double
-  ---
+
          init(sideLength: Double, name: String) {
              self.sideLength = sideLength
              super.init(name: name)
              numberOfSides = 4
          }
-  ---
+
          func area() -> Double {
              return sideLength * sideLength
          }
-  ---
+
          override func simpleDescription() -> String {
              return "A square with sides of length \(sideLength)."
          }
@@ -1276,13 +1276,13 @@ print(triangle.sideLength)
   ```swifttest
   -> class EquilateralTriangle: NamedShape {
          var sideLength: Double = 0.0
-  ---
+
          init(sideLength: Double, name: String) {
              self.sideLength = sideLength
              super.init(name: name)
              numberOfSides = 3
          }
-  ---
+
          var perimeter: Double {
              get {
                   return 3.0 * sideLength
@@ -1291,7 +1291,7 @@ print(triangle.sideLength)
                  sideLength = newValue / 3.0
              }
          }
-  ---
+
          override func simpleDescription() -> String {
              return "An equilateral triangle with sides of length \(sideLength)."
          }
@@ -1471,7 +1471,7 @@ let aceRawValue = ace.rawValue
          case ace = 1
          case two, three, four, five, six, seven, eight, nine, ten
          case jack, queen, king
-  ---
+
          func simpleDescription() -> String {
              switch self {
                  case .ace:
@@ -1562,7 +1562,7 @@ let heartsDescription = hearts.simpleDescription()
   ```swifttest
   -> enum Suit {
          case spades, hearts, diamonds, clubs
-  ---
+
          func simpleDescription() -> String {
              switch self {
                  case .spades:
@@ -1679,10 +1679,10 @@ case let .failure(message):
          case result(String, String)
          case failure(String)
      }
-  ---
+
   -> let success = ServerResponse.result("6:00 am", "8:09 pm")
   -> let failure = ServerResponse.failure("Out of cheese.")
-  ---
+
   -> switch success {
          case let .result(sunrise, sunset):
              print("Sunrise is at \(sunrise) and sunset is at \(sunset).")
@@ -1982,7 +1982,7 @@ let bDescription = b.simpleDescription
   -> let aDescription = a.simpleDescription
   >> print(aDescription)
   << A very simple class.  Now 100% adjusted.
-  ---
+
   -> struct SimpleStructure: ExampleProtocol {
           var simpleDescription: String = "A simple structure"
           mutating func adjust() {
@@ -2309,13 +2309,13 @@ print(fridgeIsOpen)
   ```swifttest
   -> var fridgeIsOpen = false
   -> let fridgeContent = ["milk", "eggs", "leftovers"]
-  ---
+
   -> func fridgeContains(_ food: String) -> Bool {
          fridgeIsOpen = true
          defer {
              fridgeIsOpen = false
          }
-  ---
+
          let result = fridgeContent.contains(food)
          return result
      }
diff --git a/TSPL.docc/LanguageGuide/AccessControl.md b/TSPL.docc/LanguageGuide/AccessControl.md
index ceb16c6fc..0362150c1 100644
--- a/TSPL.docc/LanguageGuide/AccessControl.md
+++ b/TSPL.docc/LanguageGuide/AccessControl.md
@@ -195,7 +195,7 @@ private func somePrivateFunction() {}
   -> internal class SomeInternalClass {}
   -> fileprivate class SomeFilePrivateClass {}
   -> private class SomePrivateClass {}
-  ---
+
   -> open var someOpenVariable = 0
   -> public var somePublicVariable = 0
   -> internal let someInternalConstant = 0
@@ -284,18 +284,18 @@ private class SomePrivateClass {                 // explicitly private class
         fileprivate func someFilePrivateMethod() {}  // explicitly file-private class member
         private func somePrivateMethod() {}          // explicitly private class member
      }
-  ---
+
   -> class SomeInternalClass {                       // implicitly internal class
         var someInternalProperty = 0                 // implicitly internal class member
         fileprivate func someFilePrivateMethod() {}  // explicitly file-private class member
         private func somePrivateMethod() {}          // explicitly private class member
      }
-  ---
+
   -> fileprivate class SomeFilePrivateClass {        // explicitly file-private class
         func someFilePrivateMethod() {}              // implicitly file-private class member
         private func somePrivateMethod() {}          // explicitly private class member
      }
-  ---
+
   -> private class SomePrivateClass {                // explicitly private class
         func somePrivateMethod() {}                  // implicitly private class member
      }
@@ -557,7 +557,7 @@ you must explicitly declare the nested type as public.
   -> let publicNestedInsidePublic = PublicStruct.PublicEnumInsidePublicStruct.a
   -> let internalNestedInsidePublic = PublicStruct.InternalEnumInsidePublicStruct.a
   -> let automaticNestedInsidePublic = PublicStruct.AutomaticEnumInsidePublicStruct.a
-  ---
+
   -> let internalNestedInsideInternal = InternalStruct.InternalEnumInsideInternalStruct.a
   -> let automaticNestedInsideInternal = InternalStruct.AutomaticEnumInsideInternalStruct.a
   ```
@@ -569,12 +569,12 @@ you must explicitly declare the nested type as public.
   ```swifttest
   // these are all expected to fail, because they're private to the other file
   -> let privateNestedInsidePublic = PublicStruct.PrivateEnumInsidePublicStruct.a
-  ---
+
   -> let privateNestedInsideInternal = InternalStruct.PrivateEnumInsideInternalStruct.a
-  ---
+
   -> let privateNestedInsidePrivate = PrivateStruct.PrivateEnumInsidePrivateStruct.a
   -> let automaticNestedInsidePrivate = PrivateStruct.AutomaticEnumInsidePrivateStruct.a
-  ---
+
   !$ error: 'PrivateEnumInsidePublicStruct' is inaccessible due to 'private' protection level
   !! let privateNestedInsidePublic = PublicStruct.PrivateEnumInsidePublicStruct.a
   !!                                              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -615,14 +615,14 @@ you must explicitly declare the nested type as public.
   -> let internalNestedInsidePublic = PublicStruct.InternalEnumInsidePublicStruct.a
   -> let automaticNestedInsidePublic = PublicStruct.AutomaticEnumInsidePublicStruct.a
   -> let privateNestedInsidePublic = PublicStruct.PrivateEnumInsidePublicStruct.a
-  ---
+
   -> let internalNestedInsideInternal = InternalStruct.InternalEnumInsideInternalStruct.a
   -> let automaticNestedInsideInternal = InternalStruct.AutomaticEnumInsideInternalStruct.a
   -> let privateNestedInsideInternal = InternalStruct.PrivateEnumInsideInternalStruct.a
-  ---
+
   -> let privateNestedInsidePrivate = PrivateStruct.PrivateEnumInsidePrivateStruct.a
   -> let automaticNestedInsidePrivate = PrivateStruct.AutomaticEnumInsidePrivateStruct.a
-  ---
+
   !$ error: 'InternalEnumInsidePublicStruct' is inaccessible due to 'internal' protection level
   !! let internalNestedInsidePublic = PublicStruct.InternalEnumInsidePublicStruct.a
   !!                                               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -701,7 +701,7 @@ internal class B: A {
   -> public class A {
         fileprivate func someMethod() {}
      }
-  ---
+
   -> internal class B: A {
         override internal func someMethod() {}
      }
@@ -734,7 +734,7 @@ internal class B: A {
   -> public class A {
         fileprivate func someMethod() {}
      }
-  ---
+
   -> internal class B: A {
         override internal func someMethod() {
            super.someMethod()
@@ -1162,7 +1162,7 @@ on any type that adopts the protocol.
         var publicProperty = 0
         func publicMethod() {}
      }
-  ---
+
   -> public class PublicClassConformingToInternalProtocol: InternalProtocol {
         var internalProperty = 0
         func internalMethod() {}
@@ -1190,7 +1190,7 @@ on any type that adopts the protocol.
   !$ error: cannot find type 'FilePrivateProtocol' in scope
   !! public class PublicClassConformingToFilePrivateProtocol: FilePrivateProtocol {
   !! ^~~~~~~~~~~~~~~~~~~
-  ---
+
   // these will fail, because PrivateProtocol isn't visible outside of its file
   -> public class PublicClassConformingToPrivateProtocol: PrivateProtocol {
         var privateProperty = 0
@@ -1440,7 +1440,7 @@ extension SomeStruct: SomeProtocol {
   -> struct SomeStruct {
          private var privateVariable = 12
      }
-  ---
+
   -> extension SomeStruct: SomeProtocol {
          func doSomething() {
              print(privateVariable)
@@ -1474,19 +1474,19 @@ but a public type alias can't alias an internal, file-private, or private type.
   -> public struct PublicStruct {}
   -> internal struct InternalStruct {}
   -> private struct PrivateStruct {}
-  ---
+
   -> public typealias PublicAliasOfPublicType = PublicStruct
   -> internal typealias InternalAliasOfPublicType = PublicStruct
   -> private typealias PrivateAliasOfPublicType = PublicStruct
-  ---
+
   -> public typealias PublicAliasOfInternalType = InternalStruct     // not allowed
   -> internal typealias InternalAliasOfInternalType = InternalStruct
   -> private typealias PrivateAliasOfInternalType = InternalStruct
-  ---
+
   -> public typealias PublicAliasOfPrivateType = PrivateStruct       // not allowed
   -> internal typealias InternalAliasOfPrivateType = PrivateStruct   // not allowed
   -> private typealias PrivateAliasOfPrivateType = PrivateStruct
-  ---
+
   !$ error: type alias cannot be declared public because its underlying type uses an internal type
   !! public typealias PublicAliasOfInternalType = InternalStruct     // not allowed
   !! ^                           ~~~~~~~~~~~~~~
diff --git a/TSPL.docc/LanguageGuide/AdvancedOperators.md b/TSPL.docc/LanguageGuide/AdvancedOperators.md
index 7a7229ca5..e1aeadf28 100644
--- a/TSPL.docc/LanguageGuide/AdvancedOperators.md
+++ b/TSPL.docc/LanguageGuide/AdvancedOperators.md
@@ -701,7 +701,7 @@ extension Vector2D {
   -> struct Vector2D {
         var x = 0.0, y = 0.0
      }
-  ---
+
   -> extension Vector2D {
          static func + (left: Vector2D, right: Vector2D) -> Vector2D {
             return Vector2D(x: left.x + right.x, y: left.y + right.y)
@@ -1028,7 +1028,7 @@ let afterDoubling = +++toBeDoubled
            return vector
         }
      }
-  ---
+
   -> var toBeDoubled = Vector2D(x: 1.0, y: 4.0)
   -> let afterDoubling = +++toBeDoubled
   /> toBeDoubled now has values of (\(toBeDoubled.x), \(toBeDoubled.y))
@@ -1349,7 +1349,7 @@ print(personalGreeting.draw())
   -> func caps(@DrawingBuilder content: () -> Drawable) -> Drawable {
          return AllCaps(content: content())
      }
-  ---
+
   -> func makeGreeting(for name: String? = nil) -> Drawable {
          let greeting = draw {
              Stars(length: 3)
@@ -1369,7 +1369,7 @@ print(personalGreeting.draw())
   -> let genericGreeting = makeGreeting()
   -> print(genericGreeting.draw())
   <- ***Hello WORLD!**
-  ---
+
   -> let personalGreeting = makeGreeting(for: "Ravi Patel")
   -> print(personalGreeting.draw())
   <- ***Hello RAVI PATEL!**
@@ -1539,7 +1539,7 @@ see <doc:Attributes#resultBuilder>.
          // static func * (scale: Double, vector: Self) -> Self
          static func *** (scale: Double, vector: Vector2D) -> Vector2D
      }
-  ---
+
   -> extension Double {
          static func *** (scale: Double, vector: Vector2D) -> Vector2D {
              return Vector2D(x: scale * vector.x, y: scale * vector.y)
diff --git a/TSPL.docc/LanguageGuide/AutomaticReferenceCounting.md b/TSPL.docc/LanguageGuide/AutomaticReferenceCounting.md
index b4be6f5f7..cdead9db4 100644
--- a/TSPL.docc/LanguageGuide/AutomaticReferenceCounting.md
+++ b/TSPL.docc/LanguageGuide/AutomaticReferenceCounting.md
@@ -249,7 +249,7 @@ class Apartment {
         var apartment: Apartment?
         deinit { print("\(name) is being deinitialized") }
      }
-  ---
+
   -> class Apartment {
         let unit: String
         init(unit: String) { self.unit = unit }
@@ -475,7 +475,7 @@ class Apartment {
         var apartment: Apartment?
         deinit { print("\(name) is being deinitialized") }
      }
-  ---
+
   -> class Apartment {
         let unit: String
         init(unit: String) { self.unit = unit }
@@ -505,10 +505,10 @@ unit4A!.tenant = john
   ```swifttest
   -> var john: Person?
   -> var unit4A: Apartment?
-  ---
+
   -> john = Person(name: "John Appleseed")
   -> unit4A = Apartment(unit: "4A")
-  ---
+
   -> john!.apartment = unit4A
   -> unit4A!.tenant = john
   ```
@@ -673,7 +673,7 @@ class CreditCard {
         }
         deinit { print("\(name) is being deinitialized") }
      }
-  ---
+
   -> class CreditCard {
         let number: UInt64
         unowned let customer: Customer
@@ -831,7 +831,7 @@ class Course {
              self.courses = []
          }
      }
-  ---
+
   -> class Course {
          var name: String
          unowned var department: Department
@@ -877,11 +877,11 @@ department.courses = [intro, intermediate, advanced]
 
   ```swifttest
   -> let department = Department(name: "Horticulture")
-  ---
+
   -> let intro = Course(name: "Survey of Plants", in: department)
   -> let intermediate = Course(name: "Growing Common Herbs", in: department)
   -> let advanced = Course(name: "Caring for Tropical Plants", in: department)
-  ---
+
   -> intro.nextCourse = intermediate
   -> intermediate.nextCourse = advanced
   -> department.courses = [intro, intermediate, advanced]
@@ -936,7 +936,7 @@ that other courses might have.
   >> let d = D(value: c! )
   >> print(d.a.x, d.b?.x as Any)
   << 100 Optional(100)
-  ---
+
   >> c = nil
   // Now that the C instance is deallocated, access to d.a is an error.
   // We manually nil out d.b, which is safe because d.b is an Optional and the
@@ -1014,7 +1014,7 @@ class City {
            self.capitalCity = City(name: capitalName, country: self)
         }
      }
-  ---
+
   -> class City {
         let name: String
         unowned let country: Country
@@ -1145,10 +1145,10 @@ class HTMLElement {
 
   ```swifttest
   -> class HTMLElement {
-  ---
+
         let name: String
         let text: String?
-  ---
+
         lazy var asHTML: () -> String = {
            if let text = self.text {
               return "<\(self.name)>\(text)</\(self.name)>"
@@ -1156,16 +1156,16 @@ class HTMLElement {
               return "<\(self.name) />"
            }
         }
-  ---
+
         init(name: String, text: String? = nil) {
            self.name = name
            self.text = text
         }
-  ---
+
         deinit {
            print("\(name) is being deinitialized")
         }
-  ---
+
      }
   ```
 -->
@@ -1436,10 +1436,10 @@ class HTMLElement {
 
   ```swifttest
   -> class HTMLElement {
-  ---
+
         let name: String
         let text: String?
-  ---
+
         lazy var asHTML: () -> String = {
               [unowned self] in
            if let text = self.text {
@@ -1448,16 +1448,16 @@ class HTMLElement {
               return "<\(self.name) />"
            }
         }
-  ---
+
         init(name: String, text: String? = nil) {
            self.name = name
            self.text = text
         }
-  ---
+
         deinit {
            print("\(name) is being deinitialized")
         }
-  ---
+
      }
   ```
 -->
diff --git a/TSPL.docc/LanguageGuide/BasicOperators.md b/TSPL.docc/LanguageGuide/BasicOperators.md
index 77ac27209..334ac6edd 100644
--- a/TSPL.docc/LanguageGuide/BasicOperators.md
+++ b/TSPL.docc/LanguageGuide/BasicOperators.md
@@ -714,7 +714,7 @@ var colorNameToUse = userDefinedColorName ?? defaultColorName
   ```swifttest
   -> let defaultColorName = "red"
   -> var userDefinedColorName: String?   // defaults to nil
-  ---
+
   -> var colorNameToUse = userDefinedColorName ?? defaultColorName
   /> userDefinedColorName is nil, so colorNameToUse is set to the default of \"\(colorNameToUse)\"
   </ userDefinedColorName is nil, so colorNameToUse is set to the default of "red"
@@ -939,7 +939,7 @@ for name in names[...2] {
      }
   </ Brian
   </ Jack
-  ---
+
   -> for name in names[...2] {
          print(name)
      }
diff --git a/TSPL.docc/LanguageGuide/ClassesAndStructures.md b/TSPL.docc/LanguageGuide/ClassesAndStructures.md
index e286bea82..1905c2819 100644
--- a/TSPL.docc/LanguageGuide/ClassesAndStructures.md
+++ b/TSPL.docc/LanguageGuide/ClassesAndStructures.md
@@ -439,7 +439,7 @@ print("The remembered direction is \(rememberedDirection)")
   -> var currentDirection = CompassPoint.west
   -> let rememberedDirection = currentDirection
   -> currentDirection.turnNorth()
-  ---
+
   -> print("The current direction is \(currentDirection)")
   -> print("The remembered direction is \(rememberedDirection)")
   <- The current direction is north
diff --git a/TSPL.docc/LanguageGuide/Closures.md b/TSPL.docc/LanguageGuide/Closures.md
index 423da46ad..468b2e849 100644
--- a/TSPL.docc/LanguageGuide/Closures.md
+++ b/TSPL.docc/LanguageGuide/Closures.md
@@ -374,15 +374,15 @@ someFunctionThatTakesAClosure() {
   -> func someFunctionThatTakesAClosure(closure: () -> Void) {
         // function body goes here
      }
-  ---
+
   -> // Here's how you call this function without using a trailing closure:
-  ---
+
   -> someFunctionThatTakesAClosure(closure: {
         // closure's body goes here
      })
-  ---
+
   -> // Here's how you call this function with a trailing closure instead:
-  ---
+
   -> someFunctionThatTakesAClosure() {
         // trailing closure's body goes here
      }
@@ -872,7 +872,7 @@ incrementByTen()
   -> alsoIncrementByTen()
   /> returns a value of \(r5)
   </ returns a value of 50
-  ---
+
   >> let r6 =
   -> incrementByTen()
   /> returns a value of \(r6)
@@ -978,7 +978,7 @@ print(instance.x)
   -> func someFunctionWithNonescapingClosure(closure: () -> Void) {
          closure()
      }
-  ---
+
   -> class SomeClass {
          var x = 10
          func doSomething() {
@@ -986,12 +986,12 @@ print(instance.x)
              someFunctionWithNonescapingClosure { x = 200 }
          }
      }
-  ---
+
   -> let instance = SomeClass()
   -> instance.doSomething()
   -> print(instance.x)
   <- 200
-  ---
+
   -> completionHandlers.first?()
   -> print(instance.x)
   <- 100
@@ -1097,7 +1097,7 @@ a mutable reference to `self` for structures.
   >>         someFunctionWithNonescapingClosure { x = 200 }
   >>     }
   >> }
-  ---
+
   >> completionHandlers = []
   >> var instance3 = SomeStruct()
   >> instance3.doSomething()
@@ -1116,7 +1116,7 @@ a mutable reference to `self` for structures.
   >>         someFunctionWithEscapingClosure { print(x) }  // OK
   >>     }
   >> }
-  ---
+
   >> completionHandlers = []
   >> var s = S()
   >> s.doSomething()
@@ -1173,11 +1173,11 @@ print(customersInLine.count)
   -> var customersInLine = ["Chris", "Alex", "Ewa", "Barry", "Daniella"]
   -> print(customersInLine.count)
   <- 5
-  ---
+
   -> let customerProvider = { customersInLine.remove(at: 0) }
   -> print(customersInLine.count)
   <- 5
-  ---
+
   -> print("Now serving \(customerProvider())!")
   <- Now serving Chris!
   -> print(customersInLine.count)
@@ -1311,7 +1311,7 @@ for customerProvider in customerProviders {
      }
   -> collectCustomerProviders(customersInLine.remove(at: 0))
   -> collectCustomerProviders(customersInLine.remove(at: 0))
-  ---
+
   -> print("Collected \(customerProviders.count) closures.")
   <- Collected 2 closures.
   -> for customerProvider in customerProviders {
diff --git a/TSPL.docc/LanguageGuide/CollectionTypes.md b/TSPL.docc/LanguageGuide/CollectionTypes.md
index 59c442afd..91638150a 100644
--- a/TSPL.docc/LanguageGuide/CollectionTypes.md
+++ b/TSPL.docc/LanguageGuide/CollectionTypes.md
@@ -162,7 +162,7 @@ var sixDoubles = threeDoubles + anotherThreeDoubles
   -> var anotherThreeDoubles = Array(repeating: 2.5, count: 3)
   /> anotherThreeDoubles is of type [Double], and equals [\(anotherThreeDoubles[0]), \(anotherThreeDoubles[1]), \(anotherThreeDoubles[2])]
   </ anotherThreeDoubles is of type [Double], and equals [2.5, 2.5, 2.5]
-  ---
+
   -> var sixDoubles = threeDoubles + anotherThreeDoubles
   /> sixDoubles is inferred as [Double], and equals \(sixDoubles)
   </ sixDoubles is inferred as [Double], and equals [0.0, 0.0, 0.0, 2.5, 2.5, 2.5]
@@ -934,7 +934,7 @@ oddDigits.symmetricDifference(singleDigitPrimeNumbers).sorted()
   -> let oddDigits: Set = [1, 3, 5, 7, 9]
   -> let evenDigits: Set = [0, 2, 4, 6, 8]
   -> let singleDigitPrimeNumbers: Set = [2, 3, 5, 7]
-  ---
+
   >> let a =
   -> oddDigits.union(evenDigits).sorted()
   >> assert(a == [0, 1, 2, 3, 4, 5, 6, 7, 8, 9])
@@ -998,7 +998,7 @@ farmAnimals.isDisjoint(with: cityAnimals)
   -> let houseAnimals: Set = ["🐶", "🐱"]
   -> let farmAnimals: Set = ["🐮", "🐔", "🐑", "🐶", "🐱"]
   -> let cityAnimals: Set = ["🐦", "🐭"]
-  ---
+
   >> let aa =
   -> houseAnimals.isSubset(of: farmAnimals)
   >> assert(aa == true)
@@ -1430,7 +1430,7 @@ for airportName in airports.values {
      }
   </ Airport code: LHR
   </ Airport code: YYZ
-  ---
+
   -> for airportName in airports.values {
         print("Airport name: \(airportName)")
      }
@@ -1458,7 +1458,7 @@ let airportNames = [String](airports.values)
   -> let airportCodes = [String](airports.keys)
   /> airportCodes is [\"\(airportCodes[0])\", \"\(airportCodes[1])\"]
   </ airportCodes is ["LHR", "YYZ"]
-  ---
+
   -> let airportNames = [String](airports.values)
   /> airportNames is [\"\(airportNames[0])\", \"\(airportNames[1])\"]
   </ airportNames is ["London Heathrow", "Toronto Pearson"]
diff --git a/TSPL.docc/LanguageGuide/Concurrency.md b/TSPL.docc/LanguageGuide/Concurrency.md
index 0096bae58..e35216473 100644
--- a/TSPL.docc/LanguageGuide/Concurrency.md
+++ b/TSPL.docc/LanguageGuide/Concurrency.md
@@ -392,7 +392,7 @@ for try await line in handle.bytes.lines {
 
   ```swifttest
   -> import Foundation
-  ---
+
   >> func f() async throws {
   -> let handle = FileHandle.standardInput
   -> for try await line in handle.bytes.lines {
@@ -477,7 +477,7 @@ show(photos)
   -> let firstPhoto = await downloadPhoto(named: photoNames[0])
   -> let secondPhoto = await downloadPhoto(named: photoNames[1])
   -> let thirdPhoto = await downloadPhoto(named: photoNames[2])
-  ---
+
   -> let photos = [firstPhoto, secondPhoto, thirdPhoto]
   -> show(photos)
   >> }
@@ -518,7 +518,7 @@ show(photos)
   -> async let firstPhoto = downloadPhoto(named: photoNames[0])
   -> async let secondPhoto = downloadPhoto(named: photoNames[1])
   -> async let thirdPhoto = downloadPhoto(named: photoNames[2])
-  ---
+
   -> let photos = await [firstPhoto, secondPhoto, thirdPhoto]
   -> show(photos)
   >> }
@@ -1286,13 +1286,13 @@ await logger.addReading(from: reading)
   -> struct TemperatureReading: Sendable {
          var measurement: Int
      }
-  ---
+
   -> extension TemperatureLogger {
          func addReading(from reading: TemperatureReading) {
              measurements.append(reading.measurement)
          }
      }
-  ---
+
   -> let logger = TemperatureLogger(label: "Tea kettle", measurement: 85)
   -> let reading = TemperatureReading(measurement: 45)
   -> await logger.addReading(from: reading)
@@ -1351,7 +1351,7 @@ a file descriptor isn't safe to send across concurrency domains.
   -> struct FileDescriptor {
   ->     let rawValue: CInt
   -> }
-  ---
+
   -> @available(*, unavailable)
   -> extension FileDescriptor: Sendable { }
   >> let nonsendable: Sendable = FileDescriptor(rawValue: 10)
diff --git a/TSPL.docc/LanguageGuide/ControlFlow.md b/TSPL.docc/LanguageGuide/ControlFlow.md
index 72f0551ca..9bd124891 100644
--- a/TSPL.docc/LanguageGuide/ControlFlow.md
+++ b/TSPL.docc/LanguageGuide/ControlFlow.md
@@ -1939,17 +1939,17 @@ greet(person: ["name": "Jane", "location": "Cupertino"])
          guard let name = person["name"] else {
              return
          }
-  ---
+
          print("Hello \(name)!")
-  ---
+
          guard let location = person["location"] else {
              print("I hope the weather is nice near you.")
              return
          }
-  ---
+
          print("I hope the weather is nice in \(location).")
      }
-  ---
+
   -> greet(person: ["name": "John"])
   <- Hello John!
   <- I hope the weather is nice near you.
@@ -2199,7 +2199,7 @@ func chooseBestColor() -> String {
   -> struct ColorPreference {
          var bestColor = "blue"
      }
-  ---
+
   -> func chooseBestColor() -> String {
         guard #available(macOS 10.12, *) else {
             return "gray"
@@ -2243,7 +2243,7 @@ if #unavailable(iOS 10) {
      } else {
         // Fallback code
      }
-  ---
+
   -> if #unavailable(iOS 10) {
         // Fallback code
      }
diff --git a/TSPL.docc/LanguageGuide/Enumerations.md b/TSPL.docc/LanguageGuide/Enumerations.md
index e1bde155e..04add5bac 100644
--- a/TSPL.docc/LanguageGuide/Enumerations.md
+++ b/TSPL.docc/LanguageGuide/Enumerations.md
@@ -604,7 +604,7 @@ let sunsetDirection = CompassPoint.west.rawValue
   -> let earthsOrder = Planet.earth.rawValue
   /> earthsOrder is \(earthsOrder)
   </ earthsOrder is 3
-  ---
+
   -> let sunsetDirection = CompassPoint.west.rawValue
   /> sunsetDirection is \"\(sunsetDirection)\"
   </ sunsetDirection is "west"
@@ -817,7 +817,7 @@ print(evaluate(product))
                  return evaluate(left) * evaluate(right)
          }
      }
-  ---
+
   -> print(evaluate(product))
   <- 18
   ```
diff --git a/TSPL.docc/LanguageGuide/ErrorHandling.md b/TSPL.docc/LanguageGuide/ErrorHandling.md
index 2dada638a..7b4ba692c 100644
--- a/TSPL.docc/LanguageGuide/ErrorHandling.md
+++ b/TSPL.docc/LanguageGuide/ErrorHandling.md
@@ -142,7 +142,7 @@ func cannotThrowErrors() -> String
   ```swifttest
   -> func canThrowErrors() throws -> String
   >> { return "foo" }
-  ---
+
   -> func cannotThrowErrors() -> String
   >> { return "foo" }
   ```
@@ -246,7 +246,7 @@ class VendingMachine {
         var price: Int
         var count: Int
      }
-  ---
+
   -> class VendingMachine {
   ->     var inventory = [
              "Candy Bar": Item(price: 12, count: 7),
@@ -254,7 +254,7 @@ class VendingMachine {
              "Pretzels": Item(price: 7, count: 11)
          ]
   ->     var coinsDeposited = 0
-  ---
+
   ->     func vend(itemNamed name: String) throws {
              guard let item = inventory[name] else {
                  throw VendingMachineError.invalidSelection
@@ -521,7 +521,7 @@ do {
              print("Couldn't buy that from the vending machine.")
          }
      }
-  ---
+
   -> do {
          try nourish(with: "Beet-Flavored Chips")
      } catch {
@@ -615,11 +615,11 @@ do {
         // ...
   >>    return 40
   -> }
-  ---
+
   -> let x = try? someThrowingFunction()
   >> print(x as Any)
   << Optional(40)
-  ---
+
   -> let y: Int?
      do {
          y = try someThrowingFunction()
diff --git a/TSPL.docc/LanguageGuide/Functions.md b/TSPL.docc/LanguageGuide/Functions.md
index 804c6d15c..7f1eb035a 100644
--- a/TSPL.docc/LanguageGuide/Functions.md
+++ b/TSPL.docc/LanguageGuide/Functions.md
@@ -523,7 +523,7 @@ print(anotherGreeting(for: "Dave"))
      }
   -> print(greeting(for: "Dave"))
   <- Hello, Dave!
-  ---
+
   -> func anotherGreeting(for person: String) -> String {
         return "Hello, " + person + "!"
      }
@@ -560,7 +560,7 @@ property getters can also use an implicit return.
   >> func testFatal() -> Int {
   >>     fatalError("Oh no!")
   >> }
-  ---
+
   // But not this:
   >> func testPrint() -> Int {
   >>     print(13)
@@ -803,10 +803,10 @@ that come after the variadic parameter.
   ```swifttest
   // Labeled, immediately after
   >> func f(_ a: Int..., b: String) {}
-  ---
+
   // Unlabeled, not immediately after
   >> func g(_ a: Int..., b: String, _ c: Int) {}
-  ---
+
   // Multiple
   >> func h(_a: Int..., b: String, _ c: Int..., d: String) {}
   ```
diff --git a/TSPL.docc/LanguageGuide/Generics.md b/TSPL.docc/LanguageGuide/Generics.md
index f446b72a1..b03dcb0f3 100644
--- a/TSPL.docc/LanguageGuide/Generics.md
+++ b/TSPL.docc/LanguageGuide/Generics.md
@@ -100,7 +100,7 @@ func swapTwoDoubles(_ a: inout Double, _ b: inout Double) {
         a = b
         b = temporaryA
      }
-  ---
+
   -> func swapTwoDoubles(_ a: inout Double, _ b: inout Double) {
         let temporaryA = a
         a = b
@@ -237,7 +237,7 @@ swapTwoValues(&someString, &anotherString)
   -> swapTwoValues(&someInt, &anotherInt)
   /> someInt is now \(someInt), and anotherInt is now \(anotherInt)
   </ someInt is now 107, and anotherInt is now 3
-  ---
+
   -> var someString = "hello"
   -> var anotherString = "world"
   -> swapTwoValues(&someString, &anotherString)
@@ -1276,19 +1276,19 @@ func allItemsMatch<C1: Container, C2: Container>
   -> func allItemsMatch<C1: Container, C2: Container>
            (_ someContainer: C1, _ anotherContainer: C2) -> Bool
            where C1.Item == C2.Item, C1.Item: Equatable {
-  ---
+
         // Check that both containers contain the same number of items.
         if someContainer.count != anotherContainer.count {
            return false
         }
-  ---
+
         // Check each pair of items to see if they're equivalent.
         for i in 0..<someContainer.count {
            if someContainer[i] != anotherContainer[i] {
               return false
            }
         }
-  ---
+
         // All items match, so return true.
         return true
      }
@@ -1370,9 +1370,9 @@ if allItemsMatch(stackOfStrings, arrayOfStrings) {
   -> stackOfStrings.push("uno")
   -> stackOfStrings.push("dos")
   -> stackOfStrings.push("tres")
-  ---
+
   -> var arrayOfStrings = ["uno", "dos", "tres"]
-  ---
+
   -> if allItemsMatch(stackOfStrings, arrayOfStrings) {
         print("All items match.")
      } else {
@@ -1757,7 +1757,7 @@ protocol Container {
         mutating func append(_ item: Item)
         var count: Int { get }
         subscript(i: Int) -> Item { get }
-  ---
+
         associatedtype Iterator: IteratorProtocol where Iterator.Element == Item
         func makeIterator() -> Iterator
      }
diff --git a/TSPL.docc/LanguageGuide/Initialization.md b/TSPL.docc/LanguageGuide/Initialization.md
index ff3a1bb01..c9618600e 100644
--- a/TSPL.docc/LanguageGuide/Initialization.md
+++ b/TSPL.docc/LanguageGuide/Initialization.md
@@ -599,7 +599,7 @@ even if it has stored properties that don't have default values.
   ```swifttest
   -> struct S { var int: Int; var string: String }
   -> let s = S(int: 42, string: "hello")
-  ---
+
   -> struct SS { var int = 10; var string: String }
   -> let ss = SS(int: 42, string: "hello")
   ```
@@ -664,7 +664,7 @@ print(zeroByZero.width, zeroByZero.height)
   -> let zeroByTwo = Size(height: 2.0)
   -> print(zeroByTwo.width, zeroByTwo.height)
   <- 0.0 2.0
-  ---
+
   -> let zeroByZero = Size()
   -> print(zeroByZero.width, zeroByZero.height)
   <- 0.0 0.0
@@ -1853,15 +1853,15 @@ if valueChanged == nil {
   ```swifttest
   -> let wholeNumber: Double = 12345.0
   -> let pi = 3.14159
-  ---
+
   -> if let valueMaintained = Int(exactly: wholeNumber) {
          print("\(wholeNumber) conversion to Int maintains value of \(valueMaintained)")
      }
   <- 12345.0 conversion to Int maintains value of 12345
-  ---
+
   -> let valueChanged = Int(exactly: pi)
   // valueChanged is of type Int?, not Int
-  ---
+
   -> if valueChanged == nil {
          print("\(pi) conversion to Int doesn't maintain value")
      }
@@ -1920,7 +1920,7 @@ if let giraffe = someCreature {
   ```swifttest
   -> let someCreature = Animal(species: "Giraffe")
   // someCreature is of type Animal?, not Animal
-  ---
+
   -> if let giraffe = someCreature {
         print("An animal was initialized with a species of \(giraffe.species)")
      }
@@ -1947,7 +1947,7 @@ if anonymousCreature == nil {
   ```swifttest
   -> let anonymousCreature = Animal(species: "")
   // anonymousCreature is of type Animal?, not Animal
-  ---
+
   -> if anonymousCreature == nil {
         print("The anonymous creature couldn't be initialized")
      }
@@ -2043,7 +2043,7 @@ if unknownUnit == nil {
         print("This is a defined temperature unit, so initialization succeeded.")
      }
   <- This is a defined temperature unit, so initialization succeeded.
-  ---
+
   -> let unknownUnit = TemperatureUnit(symbol: "X")
   -> if unknownUnit == nil {
         print("This isn't a defined temperature unit, so initialization failed.")
@@ -2089,13 +2089,13 @@ if unknownUnit == nil {
   -> enum TemperatureUnit: Character {
         case kelvin = "K", celsius = "C", fahrenheit = "F"
      }
-  ---
+
   -> let fahrenheitUnit = TemperatureUnit(rawValue: "F")
   -> if fahrenheitUnit != nil {
         print("This is a defined temperature unit, so initialization succeeded.")
      }
   <- This is a defined temperature unit, so initialization succeeded.
-  ---
+
   -> let unknownUnit = TemperatureUnit(rawValue: "X")
   -> if unknownUnit == nil {
         print("This isn't a defined temperature unit, so initialization failed.")
@@ -2204,7 +2204,7 @@ class CartItem: Product {
         }
      }
   >> let p = Product(name: "")
-  ---
+
   -> class CartItem: Product {
         let quantity: Int
         init?(name: String, quantity: Int) {
diff --git a/TSPL.docc/LanguageGuide/MemorySafety.md b/TSPL.docc/LanguageGuide/MemorySafety.md
index 2cd4b6999..909f93df5 100644
--- a/TSPL.docc/LanguageGuide/MemorySafety.md
+++ b/TSPL.docc/LanguageGuide/MemorySafety.md
@@ -50,7 +50,7 @@ print("We're number \(one)!")
   ```swifttest
   // A write access to the memory where one is stored.
   -> var one = 1
-  ---
+
   // A read access from the memory where one is stored.
   -> print("We're number \(one)!")
   << We're number 1!
@@ -193,7 +193,7 @@ print(myNumber)
   -> func oneMore(than number: Int) -> Int {
          return number + 1
      }
-  ---
+
   -> var myNumber = 1
   -> myNumber = oneMore(than: myNumber)
   -> print(myNumber)
@@ -251,11 +251,11 @@ increment(&stepSize)
 
   ```swifttest
   -> var stepSize = 1
-  ---
+
   -> func increment(_ number: inout Int) {
          number += stepSize
      }
-  ---
+
   -> increment(&stepSize)
   // Error: conflicting accesses to stepSize
   xx Simultaneous accesses to 0x10e8667d8, but modification requires exclusive access.
@@ -302,7 +302,7 @@ stepSize = copyOfStepSize
   // Make an explicit copy.
   -> var copyOfStepSize = stepSize
   -> increment(&copyOfStepSize)
-  ---
+
   // Update the original.
   -> stepSize = copyOfStepSize
   /> stepSize is now \(stepSize)
@@ -473,7 +473,7 @@ oscar.shareHealth(with: &maria)  // OK
              balance(&teammate.health, &health)
          }
      }
-  ---
+
   -> var oscar = Player(name: "Oscar", health: 10, energy: 10)
   -> var maria = Player(name: "Maria", health: 5, energy: 10)
   -> oscar.shareHealth(with: &maria)  // OK
diff --git a/TSPL.docc/LanguageGuide/Methods.md b/TSPL.docc/LanguageGuide/Methods.md
index ce0b6e129..570ba0814 100644
--- a/TSPL.docc/LanguageGuide/Methods.md
+++ b/TSPL.docc/LanguageGuide/Methods.md
@@ -488,15 +488,15 @@ struct LevelTracker {
   -> struct LevelTracker {
         static var highestUnlockedLevel = 1
         var currentLevel = 1
-  ---
+
   ->    static func unlock(_ level: Int) {
            if level > highestUnlockedLevel { highestUnlockedLevel = level }
         }
-  ---
+
   ->    static func isUnlocked(_ level: Int) -> Bool {
            return level <= highestUnlockedLevel
         }
-  ---
+
   ->    @discardableResult
         mutating func advance(to level: Int) -> Bool {
            if LevelTracker.isUnlocked(level) {
diff --git a/TSPL.docc/LanguageGuide/NestedTypes.md b/TSPL.docc/LanguageGuide/NestedTypes.md
index 0aea53317..ffc7f70db 100644
--- a/TSPL.docc/LanguageGuide/NestedTypes.md
+++ b/TSPL.docc/LanguageGuide/NestedTypes.md
@@ -70,12 +70,12 @@ struct BlackjackCard {
 
   ```swifttest
   -> struct BlackjackCard {
-  ---
+
         // nested Suit enumeration
         enum Suit: Character {
            case spades = "♠", hearts = "♡", diamonds = "♢", clubs = "♣"
         }
-  ---
+
         // nested Rank enumeration
         enum Rank: Int {
            case two = 2, three, four, five, six, seven, eight, nine, ten
@@ -94,7 +94,7 @@ struct BlackjackCard {
               }
            }
         }
-  ---
+
         // BlackjackCard properties and methods
         let rank: Rank, suit: Suit
         var description: String {
diff --git a/TSPL.docc/LanguageGuide/OpaqueTypes.md b/TSPL.docc/LanguageGuide/OpaqueTypes.md
index 12ba80c11..293b93d1c 100644
--- a/TSPL.docc/LanguageGuide/OpaqueTypes.md
+++ b/TSPL.docc/LanguageGuide/OpaqueTypes.md
@@ -60,7 +60,7 @@ print(smallTriangle.draw())
   -> protocol Shape {
          func draw() -> String
      }
-  ---
+
   -> struct Triangle: Shape {
         var size: Int
         func draw() -> String {
@@ -257,7 +257,7 @@ print(trapezoid.draw())
              return result.joined(separator: "\n")
          }
      }
-  ---
+
   -> func makeTrapezoid() -> some Shape {
          let top = Triangle(size: 2)
          let middle = Square(size: 2)
@@ -336,7 +336,7 @@ print(opaqueJoinedTriangles.draw())
   -> func join<T: Shape, U: Shape>(_ top: T, _ bottom: U) -> some Shape {
          JoinedShape(top: top, bottom: bottom)
      }
-  ---
+
   -> let opaqueJoinedTriangles = join(smallTriangle, flip(smallTriangle))
   -> print(opaqueJoinedTriangles.draw())
   </ *
@@ -833,7 +833,7 @@ func makeProtocolContainer<T, C: Container>(item: T) -> C {
   -> func makeProtocolContainer<T>(item: T) -> Container {
          return [item]
      }
-  ---
+
   // Error: Not enough information to infer C.
   -> func makeProtocolContainer<T, C: Container>(item: T) -> C {
          return [item]
diff --git a/TSPL.docc/LanguageGuide/OptionalChaining.md b/TSPL.docc/LanguageGuide/OptionalChaining.md
index 5abb3c59d..dd8480621 100644
--- a/TSPL.docc/LanguageGuide/OptionalChaining.md
+++ b/TSPL.docc/LanguageGuide/OptionalChaining.md
@@ -60,7 +60,7 @@ class Residence {
   -> class Person {
         var residence: Residence?
      }
-  ---
+
   -> class Residence {
         var numberOfRooms = 1
      }
@@ -462,11 +462,11 @@ john.residence?.address = createAddress()
   ```swifttest
   -> func createAddress() -> Address {
          print("Function was called.")
-  ---
+
          let someAddress = Address()
          someAddress.buildingNumber = "29"
          someAddress.street = "Acacia Road"
-  ---
+
          return someAddress
      }
   -> john.residence?.address = createAddress()
@@ -657,7 +657,7 @@ if let firstRoomName = john.residence?[0].name {
   -> johnsHouse.rooms.append(Room(name: "Living Room"))
   -> johnsHouse.rooms.append(Room(name: "Kitchen"))
   -> john.residence = johnsHouse
-  ---
+
   -> if let firstRoomName = john.residence?[0].name {
         print("The first room name is \(firstRoomName).")
      } else {
@@ -795,7 +795,7 @@ if let johnsStreet = john.residence?.address?.street {
   -> johnsAddress.buildingName = "The Larches"
   -> johnsAddress.street = "Laurel Street"
   -> john.residence?.address = johnsAddress
-  ---
+
   -> if let johnsStreet = john.residence?.address?.street {
         print("John's street name is \(johnsStreet).")
      } else {
diff --git a/TSPL.docc/LanguageGuide/Properties.md b/TSPL.docc/LanguageGuide/Properties.md
index b703fb62d..ae75c861c 100644
--- a/TSPL.docc/LanguageGuide/Properties.md
+++ b/TSPL.docc/LanguageGuide/Properties.md
@@ -240,13 +240,13 @@ manager.data.append("Some more data")
   >>       print("the DataImporter instance for the importer property has now been created")
   >>    }
      }
-  ---
+
   -> class DataManager {
         lazy var importer = DataImporter()
         var data: [String] = []
         // the DataManager class would provide data management functionality here
      }
-  ---
+
   -> let manager = DataManager()
   -> manager.data.append("Some data")
   -> manager.data.append("Some more data")
@@ -1023,15 +1023,15 @@ print(rectangle.height)
   ->     @TwelveOrLess var height: Int
   ->     @TwelveOrLess var width: Int
   -> }
-  ---
+
   -> var rectangle = SmallRectangle()
   -> print(rectangle.height)
   <- 0
-  ---
+
   -> rectangle.height = 10
   -> print(rectangle.height)
   <- 10
-  ---
+
   -> rectangle.height = 24
   -> print(rectangle.height)
   <- 12
@@ -1149,12 +1149,12 @@ struct SmallNumber {
   -> struct SmallNumber {
          private var maximum: Int
          private var number: Int
-  ---
+
          var wrappedValue: Int {
              get { return number }
              set { number = min(newValue, maximum) }
          }
-  ---
+
          init() {
              maximum = 12
              number = 0
@@ -1211,7 +1211,7 @@ print(zeroRectangle.height, zeroRectangle.width)
   ->     @SmallNumber var height: Int
   ->     @SmallNumber var width: Int
   -> }
-  ---
+
   -> var zeroRectangle = ZeroRectangle()
   -> print(zeroRectangle.height, zeroRectangle.width)
   <- 0 0
@@ -1274,7 +1274,7 @@ print(unitRectangle.height, unitRectangle.width)
   ->     @SmallNumber var height: Int = 1
   ->     @SmallNumber var width: Int = 1
   -> }
-  ---
+
   -> var unitRectangle = UnitRectangle()
   -> print(unitRectangle.height, unitRectangle.width)
   <- 1 1
@@ -1339,11 +1339,11 @@ print(narrowRectangle.height, narrowRectangle.width)
   ->     @SmallNumber(wrappedValue: 2, maximum: 5) var height: Int
   ->     @SmallNumber(wrappedValue: 3, maximum: 4) var width: Int
   -> }
-  ---
+
   -> var narrowRectangle = NarrowRectangle()
   -> print(narrowRectangle.height, narrowRectangle.width)
   <- 2 3
-  ---
+
   -> narrowRectangle.height = 100
   -> narrowRectangle.width = 100
   -> print(narrowRectangle.height, narrowRectangle.width)
@@ -1418,11 +1418,11 @@ print(mixedRectangle.height)
   ->     @SmallNumber var height: Int = 1
   ->     @SmallNumber(maximum: 9) var width: Int = 2
   -> }
-  ---
+
   -> var mixedRectangle = MixedRectangle()
   -> print(mixedRectangle.height)
   <- 1
-  ---
+
   -> mixedRectangle.height = 20
   -> print(mixedRectangle.height)
   <- 12
@@ -1500,7 +1500,7 @@ print(someStructure.$someNumber)
   -> struct SmallNumber {
          private var number: Int
          private(set) var projectedValue: Bool
-  ---
+
          var wrappedValue: Int {
              get { return number }
              set {
@@ -1513,7 +1513,7 @@ print(someStructure.$someNumber)
                  }
              }
          }
-  ---
+
          init() {
              self.number = 0
              self.projectedValue = false
@@ -1523,11 +1523,11 @@ print(someStructure.$someNumber)
   ->     @SmallNumber var someNumber: Int
   -> }
   -> var someStructure = SomeStructure()
-  ---
+
   -> someStructure.someNumber = 4
   -> print(someStructure.$someNumber)
   <- false
-  ---
+
   -> someStructure.someNumber = 55
   -> print(someStructure.$someNumber)
   <- true
@@ -1588,11 +1588,11 @@ struct SizedRectangle {
   -> enum Size {
          case small, large
      }
-  ---
+
   -> struct SizedRectangle {
   ->     @SmallNumber var height: Int
   ->     @SmallNumber var width: Int
-  ---
+
          mutating func resize(to size: Size) -> Bool {
              switch size {
                  case .small:
@@ -1705,11 +1705,11 @@ func someFunction() {
   ```swifttest
   -> func someFunction() {
   ->     @SmallNumber var myNumber: Int = 0
-  ---
+
          myNumber = 10
          // now myNumber is 10
   >>     print(myNumber)
-  ---
+
          myNumber = 24
          // now myNumber is 12
   >>     print(myNumber)
diff --git a/TSPL.docc/LanguageGuide/Protocols.md b/TSPL.docc/LanguageGuide/Protocols.md
index 1bc0d29d4..a3f9c99b2 100644
--- a/TSPL.docc/LanguageGuide/Protocols.md
+++ b/TSPL.docc/LanguageGuide/Protocols.md
@@ -646,13 +646,13 @@ class SomeSubClass: SomeSuperClass, SomeProtocol {
   -> protocol SomeProtocol {
         init()
      }
-  ---
+
   -> class SomeSuperClass {
         init() {
            // initializer implementation goes here
         }
      }
-  ---
+
   -> class SomeSubClass: SomeSuperClass, SomeProtocol {
         // "required" from SomeProtocol conformance; "override" from SomeSuperClass
         required override init() {
@@ -1240,7 +1240,7 @@ if twoThreeFour == anotherTwoThreeFour {
   -> struct Vector3D: Equatable {
         var x = 0.0, y = 0.0, z = 0.0
      }
-  ---
+
   -> let twoThreeFour = Vector3D(x: 2.0, y: 3.0, z: 4.0)
   -> let anotherTwoThreeFour = Vector3D(x: 2.0, y: 3.0, z: 4.0)
   -> if twoThreeFour == anotherTwoThreeFour {
@@ -1732,7 +1732,7 @@ beginConcert(in: seattle)
   -> func beginConcert(in location: Location & Named) {
          print("Hello, \(location.name)!")
      }
-  ---
+
   -> let seattle = City(name: "Seattle", latitude: 47.6, longitude: -122.3)
   -> beginConcert(in: seattle)
   <- Hello, Seattle!
diff --git a/TSPL.docc/LanguageGuide/StringsAndCharacters.md b/TSPL.docc/LanguageGuide/StringsAndCharacters.md
index 16cdbe9e8..36ed95915 100644
--- a/TSPL.docc/LanguageGuide/StringsAndCharacters.md
+++ b/TSPL.docc/LanguageGuide/StringsAndCharacters.md
@@ -419,7 +419,7 @@ constantString += " and another Highlander"
   -> var variableString = "Horse"
   -> variableString += " and carriage"
   // variableString is now "Horse and carriage"
-  ---
+
   -> let constantString = "Highlander"
   -> constantString += " and another Highlander"
   !$ error: left side of mutating operator isn't mutable: 'constantString' is a 'let' constant
@@ -652,7 +652,7 @@ print(goodStart + end)
   // Prints two lines:
   </ one
   </ twothree
-  ---
+
   -> let goodStart = """
          one
          two
@@ -938,9 +938,9 @@ print("the number of characters in \(word) is \(word.count)")
   -> var word = "cafe"
   -> print("the number of characters in \(word) is \(word.count)")
   <- the number of characters in cafe is 4
-  ---
+
   -> word += "\u{301}"    // COMBINING ACUTE ACCENT, U+0301
-  ---
+
   -> print("the number of characters in \(word) is \(word.count)")
   <- the number of characters in café is 4
   ```
@@ -1124,7 +1124,7 @@ welcome.insert(contentsOf: " there", at: welcome.index(before: welcome.endIndex)
   -> welcome.insert("!", at: welcome.endIndex)
   /> welcome now equals \"\(welcome)\"
   </ welcome now equals "hello!"
-  ---
+
   -> welcome.insert(contentsOf: " there", at: welcome.index(before: welcome.endIndex))
   /> welcome now equals \"\(welcome)\"
   </ welcome now equals "hello there!"
@@ -1152,7 +1152,7 @@ welcome.removeSubrange(range)
   -> welcome.remove(at: welcome.index(before: welcome.endIndex))
   /> welcome now equals \"\(welcome)\"
   </ welcome now equals "hello there"
-  ---
+
   -> let range = welcome.index(welcome.endIndex, offsetBy: -6)..<welcome.endIndex
   -> welcome.removeSubrange(range)
   /> welcome now equals \"\(welcome)\"
@@ -1206,7 +1206,7 @@ let newString = String(beginning)
   -> let beginning = greeting[..<index]
   /> beginning is \"\(beginning)\"
   </ beginning is "Hello"
-  ---
+
   // Convert the result to a String for long-term storage.
   -> let newString = String(beginning)
   ```
@@ -1350,10 +1350,10 @@ if eAcuteQuestion == combinedEAcuteQuestion {
   ```swifttest
   // "Voulez-vous un café?" using LATIN SMALL LETTER E WITH ACUTE
   -> let eAcuteQuestion = "Voulez-vous un caf\u{E9}?"
-  ---
+
   // "Voulez-vous un café?" using LATIN SMALL LETTER E and COMBINING ACUTE ACCENT
   -> let combinedEAcuteQuestion = "Voulez-vous un caf\u{65}\u{301}?"
-  ---
+
   -> if eAcuteQuestion == combinedEAcuteQuestion {
         print("These two strings are considered equal")
      }
@@ -1385,10 +1385,10 @@ if latinCapitalLetterA != cyrillicCapitalLetterA {
   ```swifttest
   -> let latinCapitalLetterA: Character = "\u{41}"
   >> assert(latinCapitalLetterA == "A")
-  ---
+
   -> let cyrillicCapitalLetterA: Character = "\u{0410}"
   >> assert(cyrillicCapitalLetterA == "А")
-  ---
+
   -> if latinCapitalLetterA != cyrillicCapitalLetterA {
         print("These two characters aren't equivalent.")
      }
diff --git a/TSPL.docc/LanguageGuide/TheBasics.md b/TSPL.docc/LanguageGuide/TheBasics.md
index 0c1568893..25655022e 100644
--- a/TSPL.docc/LanguageGuide/TheBasics.md
+++ b/TSPL.docc/LanguageGuide/TheBasics.md
@@ -1548,7 +1548,7 @@ if let firstNumber = Int("4") {
         print("\(firstNumber) < \(secondNumber) < 100")
      }
   <- 4 < 42 < 100
-  ---
+
   -> if let firstNumber = Int("4") {
          if let secondNumber = Int("42") {
              if firstNumber < secondNumber && secondNumber < 100 {
@@ -1696,7 +1696,7 @@ let implicitString: String = assumedString // Unwrapped automatically
   ```swifttest
   -> let possibleString: String? = "An optional string."
   -> let forcedString: String = possibleString! // requires an exclamation point
-  ---
+
   -> let assumedString: String! = "An implicitly unwrapped optional string."
   -> let implicitString: String = assumedString // no need for an exclamation point
   ```
@@ -1883,7 +1883,7 @@ do {
          // ...
      }
   >> func eatASandwich() {}
-  ---
+
   -> do {
          try makeASandwich()
          eatASandwich()
diff --git a/TSPL.docc/LanguageGuide/TypeCasting.md b/TSPL.docc/LanguageGuide/TypeCasting.md
index 360dfcafe..ddc4dde43 100644
--- a/TSPL.docc/LanguageGuide/TypeCasting.md
+++ b/TSPL.docc/LanguageGuide/TypeCasting.md
@@ -87,7 +87,7 @@ class Song: MediaItem {
            super.init(name: name)
         }
      }
-  ---
+
   -> class Song: MediaItem {
         var artist: String
         init(name: String, artist: String) {
@@ -175,7 +175,7 @@ print("Media library contains \(movieCount) movies and \(songCount) songs")
   ```swifttest
   -> var movieCount = 0
   -> var songCount = 0
-  ---
+
   -> for item in library {
         if item is Movie {
            movieCount += 1
@@ -183,7 +183,7 @@ print("Media library contains \(movieCount) movies and \(songCount) songs")
            songCount += 1
         }
      }
-  ---
+
   -> print("Media library contains \(movieCount) movies and \(songCount) songs")
   <- Media library contains 2 movies and 3 songs
   ```
@@ -265,7 +265,7 @@ for item in library {
            print("Song: \(song.name), by \(song.artist)")
         }
      }
-  ---
+
   </ Movie: Casablanca, dir. Michael Curtiz
   </ Song: Blue Suede Shoes, by Elvis Presley
   </ Movie: Citizen Kane, dir. Orson Welles
@@ -350,7 +350,7 @@ things.append({ (name: String) -> String in "Hello, \(name)" })
 
   ```swifttest
   -> var things: [Any] = []
-  ---
+
   -> things.append(0)
   -> things.append(0.0)
   -> things.append(42)
@@ -441,7 +441,7 @@ for thing in things {
               print("something else")
         }
      }
-  ---
+
   </ zero as an Int
   </ zero as a Double
   </ an integer value of 42
diff --git a/TSPL.docc/ReferenceManual/Attributes.md b/TSPL.docc/ReferenceManual/Attributes.md
index 37f3f28f7..3c6bf8977 100644
--- a/TSPL.docc/ReferenceManual/Attributes.md
+++ b/TSPL.docc/ReferenceManual/Attributes.md
@@ -275,7 +275,7 @@ including important milestones.
     -> protocol MyRenamedProtocol {
            // protocol definition
        }
-    ---
+
     -> @available(*, unavailable, renamed: "MyRenamedProtocol")
        typealias MyProtocol = MyRenamedProtocol
     ```
@@ -488,16 +488,16 @@ dial.dynamicallyCall(withArguments: [4, 1, 1])
              }
          }
      }
-  ---
+
   -> let dial = TelephoneExchange()
-  ---
+
   -> // Use a dynamic method call.
   -> dial(4, 1, 1)
   <- Get Swift help on forums.swift.org
-  ---
+
   -> dial(8, 6, 7, 5, 3, 0, 9)
   <- Unrecognized number
-  ---
+
   -> // Call the underlying method directly.
   -> dial.dynamicallyCall(withArguments: [4, 1, 1])
   << Get Swift help on forums.swift.org
@@ -548,7 +548,7 @@ print(repeatLabels(a: 1, b: 2, c: 3, b: 2, a: 1))
                  .joined(separator: "\n")
          }
      }
-  ---
+
   -> let repeatLabels = Repeater()
   -> print(repeatLabels(a: 1, b: 2, c: 3, b: 2, a: 1))
   </ a
@@ -676,12 +676,12 @@ print(dynamic == equivalent)
          }
      }
   -> let s = DynamicStruct()
-  ---
+
   // Use dynamic member lookup.
   -> let dynamic = s.someDynamicMember
   -> print(dynamic)
   <- 325
-  ---
+
   // Call the underlying subscript directly.
   -> let equivalent = s[dynamicMember: "someDynamicMember"]
   -> print(dynamic == equivalent)
@@ -715,7 +715,7 @@ print(wrapper.x)
 
   ```swifttest
   -> struct Point { var x, y: Int }
-  ---
+
   -> @dynamicMemberLookup
      struct PassthroughWrapper<Value> {
          var value: Value
@@ -723,7 +723,7 @@ print(wrapper.x)
              get { return value[keyPath: member] }
          }
      }
-  ---
+
   -> let point = Point(x: 381, y: 431)
   -> let wrapper = PassthroughWrapper(value: point)
   -> print(wrapper.x)
@@ -1496,14 +1496,14 @@ struct SomeStruct {
              self.someValue = custom
          }
      }
-  ---
+
   -> struct SomeStruct {
   ->     // Uses init()
   ->     @SomeWrapper var a: Int
-  ---
+
   ->     // Uses init(wrappedValue:)
   ->     @SomeWrapper var b = 10
-  ---
+
   ->     // Both use init(wrappedValue:custom:)
   ->     @SomeWrapper(custom: 98.7) var c = 30
   ->     @SomeWrapper(wrappedValue: 30, custom: 98.7) var d
@@ -1577,7 +1577,7 @@ s.$x.wrapper  // WrapperWithProjection value
   -> struct SomeProjection {
          var wrapper: WrapperWithProjection
   }
-  ---
+
   -> struct SomeStruct {
   ->     @WrapperWithProjection var x = 123
   -> }
@@ -1966,7 +1966,7 @@ into code that calls the static methods of the result builder type:
        }
     << Building second... [32]
     << Building first... [32]
-    ---
+
     -> var manualConditional: [Int]
     -> if someNumber < 12 {
            let partialResult = ArrayBuilder.buildExpression(31)
@@ -2014,7 +2014,7 @@ into code that calls the static methods of the result builder type:
            if (someNumber % 2) == 1 { 20 }
        }
     << Building optional... Optional([20])
-    ---
+
     -> var partialResult: [Int]? = nil
     -> if (someNumber % 2) == 1 {
            partialResult = ArrayBuilder.buildExpression(20)
@@ -2091,7 +2091,7 @@ into code that calls the static methods of the result builder type:
           Line(elements: [Text("Second"), Text("Third")])
           Text("Last")
        }
-    ---
+
     -> let partialResult1 = DrawingPartialBlockBuilder.buildPartialBlock(first: Text("first"))
     -> let partialResult2 = DrawingPartialBlockBuilder.buildPartialBlock(
           accumulated: partialResult1,
@@ -2135,7 +2135,7 @@ into code that calls the static methods of the result builder type:
            200
            300
        }
-    ---
+
     -> var manualBlock = ArrayBuilder.buildBlock(
            ArrayBuilder.buildExpression(100),
            ArrayBuilder.buildExpression(200),
@@ -2176,7 +2176,7 @@ into code that calls the static methods of the result builder type:
                100 + i
            }
        }
-    ---
+
     -> var temporary: [[Int]] = []
     -> for i in 5...7 {
            let partialResult = ArrayBuilder.buildExpression(100 + i)
@@ -2212,7 +2212,7 @@ into code that calls the static methods of the result builder type:
          var content: Drawable
          func draw() -> String { return content.draw() }
      }
-  ---
+
   -> @resultBuilder
      struct DrawingBuilder {
          static func buildBlock<D: Drawable>(_ components: D...) -> Line<D> {
@@ -2284,7 +2284,7 @@ into code that calls the static methods of the result builder type:
              return AnyDrawable(content: content)
          }
      }
-  ---
+
   -> @DrawingBuilder var typeErasedDrawing: Drawable {
          if #available(macOS 99, *) {
              FutureText("Inside.future")
diff --git a/TSPL.docc/ReferenceManual/Declarations.md b/TSPL.docc/ReferenceManual/Declarations.md
index 0f723f176..06f47f466 100644
--- a/TSPL.docc/ReferenceManual/Declarations.md
+++ b/TSPL.docc/ReferenceManual/Declarations.md
@@ -481,7 +481,7 @@ newAndOld.x = 200
              set { print("Setter was called"); xValue = newValue }
          }
      }
-  ---
+
   // This subclass doesn't refer to oldValue in its observer, so the
   // superclass's getter is called only once to print the value.
   -> class New: Superclass {
@@ -494,7 +494,7 @@ newAndOld.x = 200
   <- Setter was called
   <- Getter was called
   <- New value 100
-  ---
+
   // This subclass refers to oldValue in its observer, so the superclass's
   // getter is called once before the setter, and again to print the value.
   -> class NewAndOld: Superclass {
@@ -607,7 +607,7 @@ var dictionary2: Dictionary<String, Int> = [:]
 
   ```swifttest
   -> typealias StringDictionary<Value> = Dictionary<String, Value>
-  ---
+
   // The following dictionaries have the same type.
   -> var dictionary1: StringDictionary<Int> = [:]
   -> var dictionary2: Dictionary<String, Int> = [:]
@@ -688,7 +688,7 @@ func sum<T: Sequence>(_ sequence: T) -> Int where T.Element == Int {
          associatedtype Iterator: IteratorProtocol
          typealias Element = Iterator.Element
      }
-  ---
+
   -> func sum<T: Sequence>(_ sequence: T) -> Int where T.Element == Int {
          // ...
   >>     return 9000
@@ -1800,7 +1800,7 @@ let evenInts: [Number] = [0, 2, 4, 6].map(f)
      }
   -> let f = Number.integer
   -> // f is a function of type (Int) -> Number
-  ---
+
   -> // Apply f to create an array of Number instances with integer values
   -> let evenInts: [Number] = [0, 2, 4, 6].map(f)
   ```
@@ -1891,10 +1891,10 @@ it can't contain any cases that are also marked with the `indirect` modifier.
   !! <REPL Input>:1:10: error: enum case 'c' without associated value cannot be 'indirect'
   !! enum E { indirect case c }
   !!          ^
-  ---
+
   -> enum E1 { indirect case c() }     // This is fine, but probably shouldn't be
   -> enum E2 { indirect case c(Int) }  // This is fine, but probably shouldn't be
-  ---
+
   -> indirect enum E3 { case x }
 -->
 
@@ -2667,7 +2667,7 @@ protocol SubProtocolB: SomeProtocol where SomeType: Equatable { }
   -> protocol SomeProtocol {
          associatedtype SomeType
      }
-  ---
+
   -> protocol SubProtocolA: SomeProtocol {
          // This syntax produces a warning.
          associatedtype SomeType: Equatable
@@ -2679,7 +2679,7 @@ protocol SubProtocolB: SomeProtocol where SomeType: Equatable { }
   !$ note: 'SomeType' declared here
   !! associatedtype SomeType
   !! ^
-  ---
+
   // This syntax is preferred.
   -> protocol SubProtocolB: SomeProtocol where SomeType: Equatable { }
   ```
@@ -3109,7 +3109,7 @@ extension String: TitledLoggable {
              print(self)
          }
      }
-  ---
+
      protocol TitledLoggable: Loggable {
          static var logTitle: String { get }
      }
@@ -3118,7 +3118,7 @@ extension String: TitledLoggable {
              print("\(Self.logTitle): \(self)")
          }
      }
-  ---
+
      struct Pair<T>: CustomStringConvertible {
          let first: T
          let second: T
@@ -3126,14 +3126,14 @@ extension String: TitledLoggable {
              return "(\(first), \(second))"
          }
      }
-  ---
+
      extension Pair: Loggable where T: Loggable { }
      extension Pair: TitledLoggable where T: TitledLoggable {
          static var logTitle: String {
              return "Pair of '\(T.logTitle)'"
          }
      }
-  ---
+
      extension String: TitledLoggable {
         static var logTitle: String {
            return "String"
@@ -3247,7 +3247,7 @@ extension Array: Serializable where Element == String {
   -> protocol Serializable {
         func serialize() -> Any
      }
-  ---
+
      extension Array: Serializable where Element == Int {
          func serialize() -> Any {
              // implementation
@@ -3294,7 +3294,7 @@ extension Array: Serializable where Element: SerializableInArray {
   -> protocol SerializableInArray { }
      extension Int: SerializableInArray { }
      extension String: SerializableInArray { }
-  ---
+
   -> extension Array: Serializable where Element: SerializableInArray {
          func serialize() -> Any {
              // implementation
@@ -3349,14 +3349,14 @@ extension Array: MarkedLoggable where Element: MarkedLoggable { }
   -> protocol MarkedLoggable: Loggable {
         func markAndLog()
      }
-  ---
+
      extension MarkedLoggable {
         func markAndLog() {
            print("----------")
            log()
         }
      }
-  ---
+
      extension Array: Loggable where Element: Loggable { }
      extension Array: TitledLoggable where Element: TitledLoggable {
         static var logTitle: String {
diff --git a/TSPL.docc/ReferenceManual/Expressions.md b/TSPL.docc/ReferenceManual/Expressions.md
index 0c8ab74ca..042e6fe03 100644
--- a/TSPL.docc/ReferenceManual/Expressions.md
+++ b/TSPL.docc/ReferenceManual/Expressions.md
@@ -124,10 +124,10 @@ sum = (try someThrowingFunction()) + anotherThrowingFunction()
   >> var sum = 0
   // try applies to both function calls
   -> sum = try someThrowingFunction() + anotherThrowingFunction()
-  ---
+
   // try applies to both function calls
   -> sum = try (someThrowingFunction() + anotherThrowingFunction())
-  ---
+
   // Error: try applies only to the first function call
   -> sum = (try someThrowingFunction()) + anotherThrowingFunction()
   !$ error: call can throw but is not marked with 'try'
@@ -235,10 +235,10 @@ sum = (await someAsyncFunction()) + anotherAsyncFunction()
   >> var sum = 0
   // await applies to both function calls
   -> sum = await someAsyncFunction() + anotherAsyncFunction()
-  ---
+
   // await applies to both function calls
   -> sum = await (someAsyncFunction() + anotherAsyncFunction())
-  ---
+
   // Error: await applies only to the first function call
   -> sum = (await someAsyncFunction()) + anotherAsyncFunction()
   >> _ = sum  // Suppress irrelevant written-but-not-read warning
@@ -442,7 +442,7 @@ otherwise, it returns `false`.
   -> class Subclass: Base {}
   -> var s = Subclass()
   -> var b = Base()
-  ---
+
   -> assert(s is Base)
   !$ warning: 'is' test is always true
   !! assert(s is Base)
@@ -482,11 +482,11 @@ f(x as Any)
   -> let x = 10
   -> f(x)
   <- Function for Int
-  ---
+
   -> let y: Any = x
   -> f(y)
   <- Function for Any
-  ---
+
   -> f(x as Any)
   <- Function for Any
   ```
@@ -975,13 +975,13 @@ myFunction { $0 + $1 }
   -> myFunction { (x: Int, y: Int) -> Int in
          return x + y
      }
-  ---
+
   -> myFunction { x, y in
          return x + y
      }
-  ---
+
   -> myFunction { return $0 + $1 }
-  ---
+
   -> myFunction { $0 + $1 }
   ```
 -->
@@ -1050,7 +1050,7 @@ closure()
   -> let closure = { [a] in
       print(a, b)
   }
-  ---
+
   -> a = 10
   -> b = 10
   -> closure()
@@ -1119,7 +1119,7 @@ closure()
   -> let closure = { [x] in
          print(x.value, y.value)
      }
-  ---
+
   -> x.value = 10
   -> y.value = 10
   -> closure()
@@ -1152,7 +1152,7 @@ closure()
      var y = 7
      var f: () -> Int = { [x] in x }
      var g: () -> Int = { [x] in x+y }
-  ---
+
   -> let r0 = f()
   -> assert(r0 == 100)
   -> let r1 = g()
@@ -1388,7 +1388,7 @@ and the type of `z` is convertible from `SomeSubclass` to `SomeClass`.
   >> let e: E = .left
   >> let e2: E = .left.self
   >> assert(e == e2)
-  ---
+
   // postfix operator
   >> postfix operator ~
   >> extension E {
@@ -1401,7 +1401,7 @@ and the type of `z` is convertible from `SomeSubclass` to `SomeClass`.
   >> }
   >> let e3: E = .left~
   >> assert(e3 == .right)
-  ---
+
   // initializer expression
   >> class S {
   >>     var num: Int
@@ -1659,10 +1659,10 @@ let value = s[keyPath: pathToProperty]
   -> struct SomeStructure {
          var someValue: Int
      }
-  ---
+
   -> let s = SomeStructure(someValue: 12)
   -> let pathToProperty = \SomeStructure.someValue
-  ---
+
   -> let value = s[keyPath: pathToProperty]
   /> value is \(value)
   </ value is 12
@@ -1700,7 +1700,7 @@ c.observe(\.someProperty) { object, change in
   ->         self.someProperty = someProperty
   ->     }
   -> }
-  ---
+
   -> let c = SomeClass(someProperty: 10)
   >> let r0 =
   -> c.observe(\.someProperty) { object, change in
@@ -1769,10 +1769,10 @@ let nestedValue = nested[keyPath: nestedKeyPath]
              self.outer = SomeStructure(someValue: someValue)
          }
      }
-  ---
+
   -> let nested = OuterStructure(someValue: 24)
   -> let nestedKeyPath = \OuterStructure.outer.someValue
-  ---
+
   -> let nestedValue = nested[keyPath: nestedKeyPath]
   /> nestedValue is \(nestedValue)
   </ nestedValue is 24
@@ -1844,17 +1844,17 @@ print(fn(greetings))
   -> var index = 2
   -> let path = \[String].[index]
   -> let fn: ([String]) -> String = { strings in strings[index] }
-  ---
+
   -> print(greetings[keyPath: path])
   <- bonjour
   -> print(fn(greetings))
   <- bonjour
-  ---
+
   // Setting 'index' to a new value doesn't affect 'path'
   -> index += 1
   -> print(greetings[keyPath: path])
   <- bonjour
-  ---
+
   // Because 'fn' closes over 'index', it uses the new value
   -> print(fn(greetings))
   <- 안녕
@@ -1883,7 +1883,7 @@ print(count as Any)
   -> let firstGreeting: String? = greetings.first
   -> print(firstGreeting?.count as Any)
   <- Optional(5)
-  ---
+
   // Do the same thing using a key path.
   -> let count = greetings[keyPath: \[String].first?.count]
   -> print(count as Any)
@@ -1972,7 +1972,7 @@ let descriptions2 = toDoList.filter { $0.completed }.map { $0.description }
          Task(description: "Buy a pirate costume.", completed: true),
          Task(description: "Visit Boston in the Fall.", completed: false),
      ]
-  ---
+
   // Both approaches below are equivalent.
   -> let descriptions = toDoList.filter(\.completed).map(\.description)
   -> let descriptions2 = toDoList.filter { $0.completed }.map { $0.description }
@@ -2019,7 +2019,7 @@ let someTask = toDoList[keyPath: taskKeyPath]
   <- Made an index
   >> print(type(of: taskKeyPath))
   << WritableKeyPath<Array<Task>, Task>
-  ---
+
   // Using taskKeyPath doesn't call makeIndex() again.
   -> let someTask = toDoList[keyPath: taskKeyPath]
   ```
@@ -2081,10 +2081,10 @@ let selectorForPropertyGetter = #selector(getter: SomeClass.property)
   >> import Foundation
   -> class SomeClass: NSObject {
   ->     @objc let property: String
-  ---
+
   ->     @objc(doSomethingWithInt:)
          func doSomething(_ x: Int) { }
-  ---
+
          init(property: String) {
              self.property = property
          }
@@ -2201,10 +2201,10 @@ if let value = c.value(forKey: keyPath) {
             self.someProperty = someProperty
         }
      }
-  ---
+
   -> let c = SomeClass(someProperty: 12)
   -> let keyPath = #keyPath(SomeClass.someProperty)
-  ---
+
   -> if let value = c.value(forKey: keyPath) {
   ->     print(value)
   -> }
@@ -2342,7 +2342,7 @@ anotherFunction(x: x) { $0 == 13 } g: { print(99) }
   >> let r1 =
   -> someFunction(x: x) { $0 == 13 }
   >> assert(r1 == false)
-  ---
+
   >> func anotherFunction(x: Int, f: (Int) -> Bool, g: () -> Void) -> Bool {
   >>    g(); return f(x)
   >> }
@@ -2445,7 +2445,7 @@ the closure is wrapped in `Optional` automatically.
   ```swifttest
   // These tests match the example types given above
   // when describing what "structurally resembles" a function type.
-  ---
+
   >> func f1(x: Int, y: (Bool)->Int) { print(x + y(true)) }
   >> f1(x: 10) { $0 ? 1 : 100 }
   << 11
@@ -2497,7 +2497,7 @@ someFunction { return $0 } secondClosure: { return $0 }  // Prints "10 20"
          let second = secondClosure?(20)
          print(first ?? "-", second ?? "-")
      }
-  ---
+
   -> someFunction()  // Prints "- -"
   << - -
   -> someFunction { return $0 + 100 }  // Ambiguous
@@ -2564,7 +2564,7 @@ withUnsafePointer(to: myNumber) { unsafeFunction(pointer: $0) }
   >>     print(pointer.pointee)
   -> }
   -> var myNumber = 1234
-  ---
+
   -> unsafeFunction(pointer: &myNumber)
   -> withUnsafePointer(to: myNumber) { unsafeFunction(pointer: $0) }
   << 1234
@@ -2608,24 +2608,24 @@ avoid using `&` instead of using the unsafe APIs explicitly.
   >> var nsarray: NSArray = [10, 20, 30]
   >> var bridgedNSArray = nsarray as! Array<Int>
   >> var string = "Hello"
-  ---
+
   // bullet 1
   >> takesUnsafePointer(p: &n)
   >> takesUnsafeMutablePointer(p: &n)
-  ---
+
   // bullet 2
   >> takesUnsafePointer(p: &array)
   >> takesUnsafeMutablePointer(p: &array)
   >> takesUnsafePointer(p: &bridgedNSArray)
   >> takesUnsafeMutablePointer(p: &bridgedNSArray)
-  ---
+
   // bullet 3
   >> takesUnsafePointer(p: array)
   >> takesUnsafePointer(p: bridgedNSArray)
-  ---
+
   // bullet 4
   >> takesUnsafePointerCChar(p: string)
-  ---
+
   // invalid conversions
   >> takesUnsafeMutablePointer(p: array)
   !$ error: cannot convert value of type '[Int]' to expected argument type 'UnsafeMutablePointer<Int>'
@@ -2734,7 +2734,7 @@ let s4 = type(of: someValue)(data: 5)       // Error
   >> }
   -> let s1 = SomeType.init(data: 3)  // Valid
   -> let s2 = SomeType(data: 1)       // Also valid
-  ---
+
   >> let someValue = s1
   -> let s3 = type(of: someValue).init(data: 7)  // Valid
   -> let s4 = type(of: someValue)(data: 5)       // Error
@@ -2850,7 +2850,7 @@ let d: (Int, Bool) -> Void  = instance.overloadedMethod(x:y:)  // Unambiguous
          func overloadedMethod(x: Int, y: Bool) {}
      }
   -> let instance = SomeClass()
-  ---
+
   -> let a = instance.someMethod              // Ambiguous
   !$ error: ambiguous use of 'someMethod'
   !! let a = instance.someMethod              // Ambiguous
@@ -2862,7 +2862,7 @@ let d: (Int, Bool) -> Void  = instance.overloadedMethod(x:y:)  // Unambiguous
   !!              func someMethod(x: Int, z: Int) {}
   !!                   ^
   -> let b = instance.someMethod(x:y:)        // Unambiguous
-  ---
+
   -> let d = instance.overloadedMethod        // Ambiguous
   !$ error: ambiguous use of 'overloadedMethod(x:y:)'
   !! let d = instance.overloadedMethod        // Ambiguous
@@ -3139,7 +3139,7 @@ someDictionary["a"]![0] = 100
   -> x! += 1
   /> x is now \(x!)
   </ x is now 1
-  ---
+
   -> var someDictionary = ["a": [1, 2, 3], "b": [10, 20]]
   -> someDictionary["a"]![0] = 100
   /> someDictionary is now \(someDictionary)
@@ -3258,12 +3258,12 @@ someDictionary["a"]?[0] = someFunctionWithSideEffects()
         return 42  // No actual side effects.
      }
   -> var someDictionary = ["a": [1, 2, 3], "b": [10, 20]]
-  ---
+
   -> someDictionary["not here"]?[0] = someFunctionWithSideEffects()
   // someFunctionWithSideEffects isn't evaluated
   /> someDictionary is still \(someDictionary)
   </ someDictionary is still ["a": [1, 2, 3], "b": [10, 20]]
-  ---
+
   -> someDictionary["a"]?[0] = someFunctionWithSideEffects()
   /> someFunctionWithSideEffects is evaluated and returns \(someFunctionWithSideEffects())
   </ someFunctionWithSideEffects is evaluated and returns 42
diff --git a/TSPL.docc/ReferenceManual/GenericParametersAndArguments.md b/TSPL.docc/ReferenceManual/GenericParametersAndArguments.md
index b7da88e03..4af351256 100644
--- a/TSPL.docc/ReferenceManual/GenericParametersAndArguments.md
+++ b/TSPL.docc/ReferenceManual/GenericParametersAndArguments.md
@@ -179,7 +179,7 @@ extension Collection where Element: SomeProtocol {
   ```swifttest
   >> protocol SomeProtocol { }
   >> extension Bool: SomeProtocol { }
-  ---
+
   >> extension Collection where Element: SomeProtocol {
   >>     func returnTrue() -> Bool where Element == Bool {
   >>         return true
diff --git a/TSPL.docc/ReferenceManual/Patterns.md b/TSPL.docc/ReferenceManual/Patterns.md
index 4c3d5a8f8..bc0fcd529 100644
--- a/TSPL.docc/ReferenceManual/Patterns.md
+++ b/TSPL.docc/ReferenceManual/Patterns.md
@@ -328,7 +328,7 @@ if case let x? = someOptional {
         print(x)
      }
   << 42
-  ---
+
   -> // Match using an optional pattern.
   -> if case let x? = someOptional {
         print(x)
diff --git a/TSPL.docc/ReferenceManual/Statements.md b/TSPL.docc/ReferenceManual/Statements.md
index 705568981..96af6245e 100644
--- a/TSPL.docc/ReferenceManual/Statements.md
+++ b/TSPL.docc/ReferenceManual/Statements.md
@@ -1118,7 +1118,7 @@ otherwise, it returns `false`.
   >> #else
   >> #error("Can't import A")
   >> #endif
-  ---
+
   >> #if canImport(canImport_A.B)
   >> #else
   >> #error("Can't import A.B")
diff --git a/TSPL.docc/ReferenceManual/Types.md b/TSPL.docc/ReferenceManual/Types.md
index 94e44525f..2c41b6d80 100644
--- a/TSPL.docc/ReferenceManual/Types.md
+++ b/TSPL.docc/ReferenceManual/Types.md
@@ -249,7 +249,7 @@ For example:
   -> func someFunction(left: Int, right: Int) {}
   -> func anotherFunction(left: Int, right: Int) {}
   -> func functionWithDifferentLabels(top: Int, bottom: Int) {}
-  ---
+
   -> var f = someFunction // The type of f is (Int, Int) -> Void, not (left: Int, right: Int) -> Void.
   >> print(type(of: f))
   << (Int, Int) -> ()
@@ -281,17 +281,17 @@ f = functionWithDifferentNumberOfArguments // Error
   -> func someFunction(left: Int, right: Int) {}
   -> func anotherFunction(left: Int, right: Int) {}
   -> func functionWithDifferentLabels(top: Int, bottom: Int) {}
-  ---
+
   -> var f = someFunction // The type of f is (Int, Int) -> Void, not (left: Int, right: Int) -> Void.
   -> f = anotherFunction              // OK
   -> f = functionWithDifferentLabels  // OK
-  ---
+
   -> func functionWithDifferentArgumentTypes(left: Int, right: String) {}
   -> f = functionWithDifferentArgumentTypes     // Error
   !$ error: cannot assign value of type '(Int, String) -> ()' to type '(Int, Int) -> ()'
   !! f = functionWithDifferentArgumentTypes     // Error
   !! ^
-  ---
+
   -> func functionWithDifferentNumberOfArguments(left: Int, right: Int, top: Int) {}
   -> f = functionWithDifferentNumberOfArguments // Error
   !$ error: type of expression is ambiguous without more context
@@ -406,11 +406,11 @@ see <doc:Declarations#Asynchronous-Functions-and-Methods>.
   >>     }
   >>     return g
   >> }
-  ---
+
   >> let a: (Int) -> (Int) -> Int = f
   >> let r0 = a(3)(5)
   >> assert(r0 == 8)
-  ---
+
   >> let b: (Int) -> ((Int) -> Int) = f
   >> let r1 = b(3)(5)
   >> assert(r1 == 8)
@@ -1242,12 +1242,12 @@ print(type(of: z.f()))
   -> let x = Superclass()
   -> print(type(of: x.f()))
   <- Superclass
-  ---
+
   -> class Subclass: Superclass { }
   -> let y = Subclass()
   -> print(type(of: y.f()))
   <- Subclass
-  ---
+
   -> let z: Superclass = Subclass()
   -> print(type(of: z.f()))
   <- Subclass