GOODBYE

 Function
  Log the user off as though they had typed the G (goodbye) command.

 Syntax
  GOODBYE   No arguments are required

 Remarks
  There are multiple ways for the user to log off.  One is by typing G at
  the command prompt.  That will warn them if they have files flagged for
  download and (optionally) confirm their selection (incase they
  accidentally hit G and ENTER).  Another is the BYE command.  PCBoard
  assumes that, if the user typed BYE instead of G, that they really want
  to log off, didn't type it in accidentally, and want to leave now.
  GOODBYE performs the same processing as the PCBoard G command.

 Examples
  STRING s
  INPUT "What do you want to do",s
  IF     (s = "G")   THEN GOODBYE
  ELSEIF (s = "BYE") THEN BYE
  ELSE                    KBDSTUFF s
  ENDIF