[net.micro.mac] New category in Smalltalk Level 0 on the Mac

mss@dartvax.UUCP (Mark Sherman) (03/30/86)

To create a new category, select any category in the browser, edit the
"empty" class definition to create a class in the new category, rename the
category to whatever you want and "accept" the class definition. Now go back
to the category pane and select "update" from the menu. Your new category
will be at the bottom of the category list. This algorithm can be found in
the orange book.