Template:P2/doc

This template is used on approximately 100,000 pages.
To avoid large-scale disruption and unnecessary server load, any changes to it should first be tested in the template's /sandbox or /testcases subpages, or in your own user subpage. The tested changes can then be added to this page in a single edit. Please consider discussing changes on the talk page before implementing them.

This is a documentation subpage for Template:P2.
It contains usage information, categories and other content that is not part of the original template page.

The templates P1, P2 and P3 simply return the first, second and third unnamed input parameter respectively. For example:

{{P1|foo|bar|baz}} returns foo
{{P2|foo|bar|baz}} returns bar
{{P3|foo|bar|baz}} returns baz

These templates can be used inside other templates as an alternative to the {{#switch}} parser function, to switch between outputs based on whether the input is "1", "2" or "3":

{{P{{{1}}}|output if 1|output if 2|output if 3}}

Using {{#switch}}, this syntax is equivalent to

{{#switch:{{{1}}}|1=output if 1|2=output if 2|3=output if 3}}

except that the parser function strips whitespace between parameters whereas the templates don't.