list_cat() arg’s…too few?

just looked at the codex, and from my count, it’s listing 18, with the 18th being hierarchical , which is only 1.5 or higher. Perhaps that is the one.
https://codex.www.ads-software.com/Template_Tags/list_cats

…more: the function declaration in template-functions-category.php refers to 18 arguments. The 2 not included in the wiki are: categories (default ‘0’) and recurse (default ‘0’). Not sure what the interplay with some of the other similar-sounding parameters are…?

cheers!