How to get PgUp and PgDn keys working in vi?

[Paul Gillingwater]

Hi,

SCO Xenix 2.3 on 386.  I'd like to get the PgUp and PgDn keys
working on the console terminal multi-screens.  I tried creating a
.exrc with the following in it:

map! ^[[I ^[^u
map! ^[[G ^[^d

This is not well documented by SCO.  It didn't work.  (Of course I
used ^V to escape the ^[ and other control codes).

Can anyone suggest an easier way?  I tried also setting the PU and
PD entries in the /etc/termcap entry for TERM=ansi to no avail.
-- 
Paul Gillingwater, paul at actrix.co.nz