Frank Heckenbach wrote: <snip>
Anyway, Peter Gerwinski (who originally wrote the above paragraph) suggests the following clarification:
[...] If you choose to release it, it must be under the GNU GPL.
For excessive clarification, add this:
"... (Your modifications, if they can stand on their own as a separate entity, may be released any way you like, but the combination of them with GPC may only be released under the terms of the GNU GPL.)"