Not All Drawing Modes Work with a PostScript Printer

One of the Newton 2.x OS Q&As
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This document was exported on 7/23/97.

CHANGED: Not All Drawing Modes Work with a PostScript Printer (7/16/97)

Q: It seems that not all drawing modes work with printing. Is that true?

A: Yes, at least this is true for PostScript printers. PostScript behaves like layers of paint: you can not go back and change something. Anything that uses an invert mode will not work. Specifically, modeXOR and modeNot will not work.

If you want to get the effect of white text on a black/filled background, use bit clear mode (modeBic) for drawing the text.

This does not affect non-PostScript print drivers, for instance, Apple StyleWriter printers and Fax.