Epson Printer Interface Cartridge for the Apple IIc Operation Manual page 56

When you run this program, you should get the printout below:
The first part of the program creates a diamond pattern on the
screen, and the subroutine that starts with line 60000 dumps the pat-
tern to the printer. When it is printed, the image on the screen is
rotated 90 degrees.
If you create an image on the screen, you can use this subroutine to
print it. This screen dump does not, however, print text; it prints only
graphics.
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