(DOCSP-8894): As a public dashboard viewer, I can filter dashboards

Author: jwilliams-mongo

source/dashboard-filtering.txt

@@ -21,8 +21,15 @@ charts.
 
 Dashboard ``Authors`` or ``Owners`` set the fields that any dashboard 
 users can filter data with. ``Authors`` or ``Owners`` can also set 
-initial default values for each filter. Any dashboard users can filter 
-based on values they specify and save their own default filter values.
+initial default values for each filter. Authenticated dashboard users 
+can filter based on values they specify and save their own default 
+filter values.
+
+.. note::
+
+   Users who open a dashboard using a public link can't save their own
+   default filter values. |charts-short| reverts to the initial default 
+   filter values after refreshing the page or starting a new session.
 
 .. figure:: /images/charts/dashboard-filter-cards.png
    :figwidth: 720px
@@ -60,6 +67,13 @@ The changes that a dashboard viewer makes to filters don't affect other
 dashboard ``Author`` or ``Owner`` modifies a filter's default values 
 unless you :ref:`reset a filter <revert-dashboard-filters>`. 
 
+.. note::
+
+   |charts-short| doesn't persist filter states or values for users who
+   open a dashboard using a public link. |charts-short| reverts to the 
+   initial default filter values after refreshing the page or starting a 
+   new session.
+
 The :guilabel:`Dashboard Filters` Pane
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~