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&2A 42  Read PRISMA logical screen size				Prisma
	On exit:
		XY?0..1 = maximum X coordinate (width-1)
		XY?2..3 = maximum Y corrdinate (height-1)
	The size of the logical screen will vary with the parameter set
	by the *WIDTH command.

PRISMA calls

See Also

Jgharston (talk) 19:52, 25 October 2015 (UTC)