Thread:TheRealPella/@comment-26942307-20151019175403/@comment-15636815-20151019190859

Both formats are equally correct. cost understands both and will give the correct output whether the parameter names are complete or abbreviated.

The full names, of course, are more formal. The four-character parameter names are shortcuts designed to make things quicker and easier for editors. Also, {t|Infobox wagon}} uses the same four-character abbreviations for "wagon type", so they provide some consistency with that template.

If you want to type out the full names, then do that. If you want to use the short names, then do that. I prefer to use the short names, but that's probably because I wrote them into cost. The computer doesn't care. ;-)

Believe me, I'd much rather you ask a bunch of questions than to make a bunch of edits that we must edit later. LOL ... You're doing well.