Copyright notice: the polybutton and polyedit XFCNs and their source code are ©1990 Greg Anderson.
The polybutton and polyedit XFCNs are "virtual shareware": send money if you want to. Request a mailing address from greggor@apple.com.
There are no restrictions on the use and redistribution of the polybutton and polyedit XFCNs. You may use them in all of your stacks, give them away with your stacks, sell your stacks for profit, whatever you wish. You may not resell the polybutton and/or polyedit XFCNs for profit, however.
Source code for both the polybutton and polyedit XFCNs is also available. You may freely modify the code, extract routines for use in other projects & so on, but you may not sell any such derivative work for profit without permission of the original author (me).