This template adds a page to Category:Wikipedia supplemental pages.

Use this template carefully, only when there is a well-established consensus at the relevant policy or guideline page to link to the essay in question from the policy or guideline. The noun supplement does not mean "an interpretation" nor just "something added". It means precisely "something added, especially to make up for a deficiency", in this case a lack or gap in an official Wikipedia's policy or guideline. If consensus changes and the essay is no longer referenced in a policy or guideline, change the tag to a standard {{Essay|interprets=}} or {{Guidance essay|interprets=}}, as appropriate.

This template has an |interprets= a.k.a. |pages= parameter. Replaces "such guidance" with "the foo" where "foo" is a link to one or more policies or guidelines and label(s) for what they are, e.g.:

  • |interprets=[[Wikipedia:No original research]] policy
  • |interprets=[[Wikipedia:Manual of Style]] guideline
  • |interprets=[[Wikipedia:No original research]] and [[Wikipedia:Neutral point of view]] policies
  • |interprets=[[Wikipedia:Verifiability]] policy and [[Wikipedia:Identifying reliable sources]] guideline

The template also has optional |shortcut=, |shortcut2=, |shortcut3=, and |shortcut4= parameters that can be used to add a Shortcut: box to the right-side, with up to four shortcuts.

by itself throws an error because the template is meaningless without an |interprets= parameter:
  • {{supplement|interprets=[[Wikipedia:Neutral point of view]] policy}}
becomes:
  • {{supplement|interprets=[[Wikipedia:Neutral point of view]] policy|shortcut=WP:SHORTCUT|shortcut2=WP:SHORTCUT2}}
becomes:
  • {{supplement|interprets=[[Wikipedia:Neutral point of view]] and [[Wikipedia:Biographies of living persons]] policies}}
becomes:
  • {{Information page}} – the banner template for pages that are more just informational and non-opinionated like WP:GOV
  • {{Wikipedia how-to}} – the banner template for pages that are more directly instructional and non-opinionated like H:EDIT.
  • {{Essay|interprets=}} – the banner template for pages that are more opinionated then instructional or technical; there are several parameters and variations.
  • Wikipedia:Template messages/Wikipedia namespace – for more "Wikipedia:"-namespace header templates.