Template:Bool/doc

This simple helper template will display  if its input is ,  ,  , or. It will not display anything otherwise.

This functionality is useful for templates where a parameter should only have an effect if it is set to one of these positive values. It is especially helpful for the integration of TemplateData, which sets a parameter that is marked as Boolean to 0 if it is added and de-selected.

Usage
The input string to check.
 * First unnamed parameter