ChatBox  is  a Split-Screen chat utility
designed for  PCBoard.  The Sysop may select
the Split-Screen format for chatting. In
horizontal mode, the screen is split into two
halves (boxes), upper and  lower. In vertical
mode, the screen is split into two halves
(boxes),  left and  right.  ChatBox is
installed as a 'door' and is designed to  be
used between the Sysop and an on-line caller.