Template:Substitution/doc

Not to be confused with Template:Subst.

Usage
Add this message box to a template's documentation to briefly explain the rules of substitution for the template.

Parameters
The first parameter inserts a word between "should" and "be", e.g. "always", "never" etc. To have no word instead, insert a space.

The second parameter is optional. It adds text to the end of the sentence.

Example
produces: