More things not parsed

doc/osh-manual.md

@@ -109,6 +109,14 @@ YES:
Just like `EOF]` will not end the here doc, `EOF)` doesn't end it either.  It
must be on its own line.

<!-- 
TODO: Add these

- dynamic parsing of `$(( $a $op $b ))`.  OSH requires an explicit eval.
- new one: `` as comments in sandstorm
  # This relates to comments being EOL or not
-->

## set builtin

### errexit