This article is from the Apple II Csa2 FAQ, by Jeff Hurlburt with numerous contributions by others.
The Kzin Warrior published a block edit patch version in Computist #73 which lets you do this, at least on a ROM-01 GS. Using ProSel's Zap utility (also called "Block Warden") you search for $C9 08 00 D0 CE on the PaintWorks Gold diskette or a copy. (I found these bytes in Block $3D5 starting at byte $1DF.) Change the 08 to 7F and save the change. Copy Paintworks.Gold and the PaintTools folder (with its contents) to a folder on your hard disk. The Patch allows you to to start PWG under System 6 and use most PWG features. However, some Palette selection options will bomb the program. A few tests showed PWG will load files from an HFS partition. ----------------------------
 
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