[pmwiki-users] Any way to test : if backlink exists ? (then print something)

[ABClf]

Hello,

I'm willing to test if MyPage has backlink(s) in OtherGroup, then
print backlinks.
I'm not sure whether native PmWiki will let me do this, or if
additional markup is requested (in that later case, would someone be
able to do it) ?

(documentation used :
https://www.pmwiki.org/wiki/Cookbook/ConditionalMarkupSamples)

Gilles.