{{Find}} is a module-based template which partly stands in for RegexFunctions, disabled on Miraheze per phab:T8866.
Code
{{Find|func|text|str}}
where func must be replaced by one of three function options, which will search for the given case-sensitive string (str):
in the supplied text (or with txtb);
at the start of a text (first or fstb); or
at the end thereof (last or lstb).
"txtb", "fstb", and "lstb" respectively stand for "text (boolean)", "first (boolean)", and "last (boolean)".
Depending on whether str matches, the value will be the starting position number (for text searches), "1" for successful first or last matches, or "0"/empty if unmatched.