Functions and methods in the main documentation should be formatted as =head3 function_name. Make this consistent through the documentation.
Some docs use =head2 and some use function_name() (the parens make it difficult to link to that section) and some use =item. For example, =head2 want() should be =head3 want.
swapping head2 for head3 when it comes to functions/methods as was su…
…ggested in #208