[plt-scheme] may I copy scribble?

Hi,

I've been writing a Lisp-like language that runs in the Java VM, and
I'd like to copy the reader extension idea from scribble -- the main
ideas documented here:

http://pre.plt-scheme.org/docs/html/scribble/reader.html

I like the @cmd[datum ...]{text ... } syntax.  I see that PLT is LGPL,
but I'm not copying source code, and I'm not sure what people expect
these days when you copy "ideas".   So I figured I'd just ask.  Of
course, I would write an acknowledgement in my documentation.

Rob

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