Template:Acronym/LongName
From Halopedia, the Halo wiki
Usage
This template converts one of Halopedia's two-to-six character long acronyms into the full name of the topic that corresponds to the acronym, including all subtitles. For instance, {{Acronym/LongName|CE}} produces "Halo: Combat Evolved" and {{Acronym/LongName|SiSto}} produces "Halo: Silent Storm – A Master Chief Story".
However, be warned: what this template returns is not guaranteed to be a valid page name on Halopedia! If you're looking to link to a page using an acronym, the template you're looking for is Template:Acronym/PageName!