Editing Module:Arguments/doc (section)

=== Known limitations ===

The use of metatables also has its downsides. Most of the normal Lua table tools won't work properly on the args table, including the <code>#</code> operator, the <code>next()</code> function, and the functions in the table library. If using these is important for your module, you should use your own argument processing function instead of this module.