Usage
{{Str rep|<string>|<find>|<replacewith>}}
Returns <string> with the first occurrence of <find> replaced with <replacewith>. If you are lucky.
Limitations
Caveat emptor.
Works on the assumption that there is a match. For a conditional version see {{str repc}}.
50 char strings. Limited set of characters,perhaps
Expensive.
See also
Description of all string templates