[racket] What do these symbols mean in Racket regexp documentation?

From: Don Green (infodeveloperdon at gmail.com)
Date: Tue May 7 17:14:30 EDT 2013

Can you apply the verbage that must be represented by the symbols in Racket
regexp documentation shown below:

;;= means what?

| means what?

<pces> means what?





Match ‹*pces*›



Match either ‹*regexp*›, try left first



Don Green
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