In particular, for file-specs. Also use case-lambda for the parameterize example. There are undoubtedly other cases.
Regions that need examples:
Bytevector examples: done
Exception examples are in #362. File examples and current-*-port examples still needed.
current-*-port example provided under get-string-output.
I'm not going to bother with file procedure examples. No other Scheme standard has them either.