Template:Sqr

{{subst:subst}}#ifexpr:{{subst:subst}}#ifeq:+|-|(1-{{{1}}}/{{{2}}}/{{{2}}}>.00000000002) or (1-{{{1}}}/{{{2}}}/{{{2}}}<-.00000000002)|1}} |{{subst:subst}}s qr|{{{1}}}|Expression error: Unrecognized punctuation character "{".|1}}|{{{2}}}}}

Substituting this template produces one or more new substitution template calls, allowing recursive change of a page, see Help:Recursive conversion of wikitext.