>      > Is everything what you call "reader directive" actually a reader
>     directive?
>
>     No, you're right. The title should be something else. Any suggestions?
>
>     We could just title it "#! syntax" or "Hash-bang syntax", but it might
>     be nice to group other prefixes besides "#!" together in the same table.

> As far as I am concerned, "#!" means "identifier follows", and what the
> identifier is tells you what it's for.  There is no semantics to "#!" at
> all.  (Fortunately for this theory, /bin/sh is a perfectly good
> identifier in Scheme.)

A quick search didn't turn up reasonable examples of identifiers with
prefixes other than #! in Scheme's read syntax, so I followed your
suggestions and renamed that section of the registry "Reader #!
identifiers" (source file: reader-hash-bang.scm).