This template creates a floatboxed link to a User talk:_____/Warnings subpage, only from that user's userpage or talkpage space. In any other namespace, the box and link will not appear on the page.
If the /Warnings subpage does not (yet) exist, the link text will be a neutral gray color rather than a redlink. →
This template takes one optional parameter: a subpage name, if you prefer not to use "Warnings".
Usage: either {{Warningsonsubpage}} or {{Warningsonsubpage|Othername}}