# `constants`: Markdown-It Rule Ordering Tables

```{py:currentmodule} myform.constants
```

`BLOCK_RULES` maps every known `markdown-it` block rule to the alternate rule chains it
participates in, and `INLINE_RULES` lists the known inline rules; `ParserEntry` validates each
parser registration against these tables.

```{eval-rst}
.. automodule:: myform.constants
   :members:
```