diff --git a/docs/doxygen/overviews/windowids.h b/docs/doxygen/overviews/windowids.h
index 427b050c4c..a4a612cf7a 100644
--- a/docs/doxygen/overviews/windowids.h
+++ b/docs/doxygen/overviews/windowids.h
@@ -13,27 +13,16 @@
 
 Various controls and other parts of wxWidgets need an ID.  Sometimes the ID may
 be directly provided by the user or have a predefined value, such as
-@c wxID_OPEN. Often, however, the value of the ID is unimportant and is created
-automatically by calling wxWindow::NewControlId or by passing @c wxID_ANY as
-the ID of an object.
+@c wxID_OPEN. Often, however, the value of the ID is unimportant and in this
+case it is enough to use @c wxID_ANY as the ID of an object which tells
+wxWidgets to assign an ID automatically. All such automatically-assigned IDs
+are negative, so the IDs predefined in the user code should always be positive
+to avoid clashes with them.
 
-There are two ways to generate an ID.  One way is to start at a negative
-number, and for each new ID, return the next smallest number.  This is fine for
-systems that can use the full range of negative numbers for IDs, as this
-provides more than enough IDs and it would take a very very long time to run
-out and wrap around.  However, some systems cannot use the full range of the
-ID value. Windows, for example, can only use 16 bit IDs, and only has about
-32000 possible automatic IDs that can be generated by wxWindow::NewControlId.
-If the program runs long enough, depending on the program itself, using this
-first method would cause the IDs to wrap around into the positive ID range and
-cause possible clashes with any directly specified ID values.
-
-The other way is to keep track of the IDs returned by wxWindow::NewControlId
-and don't return them again until the ID is completely free and not being used
-by any other objects.  This will make sure that the ID values do not clash with
-one another.  This is accomplished by keeping a reference count for each of the
-IDs that can possibly be returned by wxWindow::NewControlId. Other IDs are not
-reference counted.
+If you do care about the ID value but don't want to specify it as a literal in
+your code, you can use wxWindow::NewControlId() to create an ID that had never
+been returned by this function before and, being also negative, never conflicts
+with any IDs explicitly defined in the program if the advice above is followed.
 
 @see wxIdManager, wxWindow::NewControlId(), wxWindow::UnreserveControlId()