&2E 46 Read PRISMA base screen visible origin Prisma
The coordinates are returned with respect to the current graphics
origin. The coordinate returned is the bottom left hand corner
of the BASE screen when the LOWER screen is disabled. When
enabled, the LOWER screen will cover this point.
The BASE screen co-ordinate in the bottom left hand corner of the
visible screen will vary with the current zoom factor and with
panning and tilting commands. The OSWORD &2E call can be used to
return this co-ordinate.
Jgharston (talk) 19:54, 25 October 2015 (UTC)