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ZQuadrant1 was introduced in OS 2.53MP. As it's name might imply, it puts Quadrant I in the viewing window (the upper-left quadrant). Here are the window settings it affects:
-Xmin is set to 0 and Xmax is set to 9.4 making each pixel .1 units. -Ymin is set to 0 and Ymax is set to 9.4 (each pixel is 47/310 units) -Xscl and Yscl are set to 1 -ΔX is set to .1 -ΔY is set to 47/310 -Xres is set to 1
This command does not seem to work in programs.