- "Double quotes" for strings (filenames, section names, CLI option arguments, etc)
- 'Single quotes' for characters and CLI option flags
- `Backticks` for keywords and identifiers (symbol names, charmap names, etc)
CLI option flags also have their leading dashes
* Reinstate PUSHS clearing the SECTION scope
Otherwise you can use `PUSHS` to simulate the old `ds -21`, and possibly cause bugs
* Have PUSHS push LOAD block state as well
It does not make sense not to, and coud cause bugs.
POSIX leaves undefined the order of output if stderr is injected into stdout,
and in practice it differs on Windows (Linux buffers both streams separately,
Windows interleaves them as they arrive without buffering).
This should help testing on other platforms
