This template employs intricate features of template syntax.
You are encouraged to familiarise yourself with its setup and parser functions before editing the template. If your edit causes unexpected problems, please undo it quickly, as this template may appear on a large number of pages.
You can conduct experiments, and should test all major changes, in either this template's sandbox, the general template sandbox, or your user space before changing anything here.
Use this template in the same way that you would use {{User wikipedian for}}. If you leave out the htmlusername parameter, it will just go to X!'s edit counter homepage. If you add the parameter, it will link directly to your edit count. Remember to capitalize appropriately!
There is an optional lowercase parameter for usernames with a lowercase first letter.
Sample code
Resulting infobox
{{User active wikipedian for|year=2001|month=1|day=15}}
User_active_wikipedian_for has been active on Wikipedia for 24 years, 6 months and 19 days.
{{User active wikipedian for|year=2001|month=1|day=15|htmlusername=Reaper%2BEternal}}
User_active_wikipedian_for has been active on Wikipedia for 24 years, 6 months and 19 days.
{{User active wikipedian for|year=2001|month=1|day=15|htmlusername=Reaper%2BEternal|lowercase=1}}
user_active_wikipedian_for has been active on Wikipedia for 24 years, 6 months and 19 days.
