Rembrandt can function in two 256 colour modes.  First,
it works in MODE 15, (640x256 pixels) and the multi-sync
MODE 21, (640x512).  If you have a multi-sync monitor
then you will want to set it to MODE 21, to do this
load !Edit, or a similar text editor.  Then load the
file 'Defs' which is located in the !Rembrandt 
application.  At the top there will either be a 15 or
a 21.  Change this to the neccessary mode but DO NOT
press RETURN.  Save the file as 'Defs' and load 
Rembrandt normally.
