GLOBAL Command X - eXpert toggle

This command switches between NOVICE mode and EXPERT mode.  In NOVICE mode,
RBBS-PC displays a menu before each command, and displays detailed
information when asking you for input.  EXPERT mode bypasses menu displays
and detailed information.  When you are comfortable with RBBS-PC's command
structure, EXPERT mode will make your session much faster.

Each time you use the "X" command you will alternate between EXPERT and
NOVICE mode.

TIPS:
1. Use the novice mode until you become comfortable with the RBBS-PC
   commands.

2. Capture and print a copy of the RBBS-PC menus for your reference, then
   switch to EXPERT mode.  This will make RBBS-PC run faster.

