Merge branch 'dvc-persist' from iwbnwif

See https://github.com/wxWidgets/wxWidgets/pull/541

interface/wx/persist.h

@@ -204,6 +204,9 @@ protected:
 /**
     Base class for persistent object adapters.
 
+    See @ref overview_persistence for an overview of persistent objects within
+    wxWidgets.
+
     wxWidgets persistence framework is non-intrusive, i.e. can work with the
     classes which have no relationship to nor knowledge of it. To allow this,
     an intermediate persistence adapter is used: this is just a simple object
@@ -292,13 +295,14 @@ protected:
     bool SaveValue(const wxString& name, T value) const;
 
     /**
-        Restore the value saved by Save().
+        Restore a value saved by SaveValue().
 
         @param name
-            The same name as was used by Save().
+            The same name as was used by SaveValue().
         @param value
-            Non-@NULL pointer which will be filled with the value if it was
-            read successfully or not modified if it wasn't.
+            Non-@NULL pointer to the same type that was passed to SaveValue().
+            The pointed to object will be filled with the saved value if it
+            was read successfully or not modified otherwise.
         @return
             @true if the value was successfully read or @false if it was not
             found or an error occurred.