Helper template for documentation pages of location userboxes, which support first parameter verb phrases.

This template automatically creates a preamble about user categories, and a section "Usage" with examples of customizations. See example at ਫਰਮਾ:ਵਰਤੋਂਕਾਰ ਭਾਰਤ.

Add {{Userbox/citydoc|usercategory1|usercategory2|...}} on /doc subpage.