It shows nothing when <cοde><nοwiki>__NΟCACHE__</nοwiki></cοde>
syntax is used.
I took the liberty to translate MediaWiki:Magicnocache-desc/el using this syntax <cοde><nοwiki>__NΟCACHE_</nοwiki></cοde><cοde><nοwiki>_</nοwiki></cοde>
which is a working one in case someone would copy-paste it.
(But don't copy-paste any of my examples here, they use Greek "o" characters)!