HPPAINT V1.3 - PICT editor

Translated to English by Fin, modified to error for S/SX, modified to work
from covered ports too, compacted code by about 1K, fixed 1 bug.

	Keys:

	ENTER			Commands menu
	Cursor keys		Move cursor
	RS + Cursor keys	Move cursor to border
	*			Set mark
	+			Set pixel
	-			Clear pixel
	<=			Cancel key in menus / magnification