I think that's a fair answer to this topic, which doesn't really state any question precisely. Also, hard to find more authoritative source.

> This just isn't supported in the *FrontEnd*. The *FE* tries very hard not to put unreadable typesetting markup into packages to facilitate easy exchange with other programming editors.

> Possibly workarounds...putting the code in a notebook with an auto-save package would work, but then the package file is no longer the primary source file, and that probably won't satisfy you. You could post-process the save file, but that seems dicey to me. 

> –John Fultz Oct 25 '12 at 6:05