Quick, what's the opposite of login?
The answer, of course, is logout.
And the opposite of logon?
Logoff!
So why do some systems want you to login, then logoff; while others prefer that you logon and logout?
I must be developing another pet peeve.
I've been programming for 30+ years in more languages that I can count. I've been weaving (as in cloth) for several years. Weaving and computers mix well. My newest obsession (if you don't count the bike I just bought) is learning to play the upright bass. My even newer obsession is contra dancing.
I am also "the kind of person that keeps a parrot" (see the Mark Twain quote)