It doesn't always mean writing got done, although it does mean planning and thought were happening. Best way to tell if writing got done is to see if the KB count (posted as a subhead on the top level) changes, like it did yesterday.
-- Bob
---------
Then the horns kicked in...
...and my shoes began to squeak.
-- Bob
---------
Then the horns kicked in...
...and my shoes began to squeak.