scrool

scrool /skrool/ n.  [from the pioneering Roundtable chat
   system in Houston ca. 1984; prob. originated as a typo for
   `scroll'] The log of old messages, available for later perusal or
   to help one get back in synch with the conversation.  It was
   originally called the `scrool monster', because an early version
   of the roundtable software had a bug where it would dump all 8K of
   scrool on a user's terminal.