Template:Exp
{{subst:#if:x |{{subst:expr1}}{{subst:exp/sum1|sum=1+{{{x}}}|n={{{n}}}|x={{{x}}}}} }}}}
- Substituting this template produces one or more new substitution template calls, allowing recursive change of a page, see m:Help:Recursive conversion of wikitext.
- These templates supplemnt the functions of mediawiki, as in meta:help:calculations.