{{msg-mw|Storyboard-hidden|notext=yes}}, {{msg-mw|Storyboard-published|notext=yes}}, {{msg-mw|Storyboard-unpublished|notext=yes}}
Fragment of a discussion from Support/LiquidThreads
So first, if I'm not mistaken, refer to stories. Second to story. In this case PLURAL (one/many type) should be used. And noun(s) should be documented.