fill out more documentation; add placeholder? and hash-table-placeholder?

svn: r8089

original commit: 68ec60f448b8fa10a41acb7d56419134bb2ba66e
This commit is contained in:
Matthew Flatt 2007-12-21 03:45:22 +00:00
parent 5ec968d86f
commit b6e6d30c73

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@ -322,7 +322,8 @@ The @tech{decode}d @scheme[pre-flow] documents the procedure. In this
description, a reference to any identifier in @scheme[datum] via
@scheme[scheme], @scheme[schemeblock], @|etc| is typeset as a sub-form
non-terminal. If @scheme[#:literals] clause is provided, however,
instances of the @scheme[literal-id]s are typeset normally.
instances of the @scheme[literal-id]s are typeset normally (i.e., as
determined by the enclosing context).
The typesetting of @scheme[(id . datum)] preserves the source
layout, like @scheme[schemeblock].}