Was in gmail. Things were slow to move. At bottom were errors 201,203,204,205. Where are the definitions located on my computer?

Try searching google as the actual definitions are not on your computer.

Ditto:
Google gmail error 201 etc. and see what the error code means and some suggested fixes.
I did this for 201 and it looks like this is a time sync error.

"Make sure you time and date is correct, that it's synced with windows.time.com (http://www.google.com/url?q=http%3A%2F%2Fwindows.time.com&sa=D&sntz=1&usg=AFQjCNEfxnH7cseEgP2TaYLWvXe2UfINqA)"