Changing the term "keys" in input routine

I wonder if a more console-focused term such as "buttons" could be used instead of "keys" for the following-
- UpdateKeys
- wCurKeys
- wNewKeys

From what I can tell the comments in the code itself uses the word "buttons" and "directions" to refer to the face buttons and d-pad and that "keys" are meant to encompass both of these but I still feel like it's a word not quite suited for the purpose.

Search the codebase for UpdateKeys, wCurKeys, and wNewKeys, then read the nearby comments describing buttons and directions. Check every reference to determine whether the terminology can be changed consistently; done means the names and related comments use the agreed term without breaking references.

Written by the indexing model from the issue text.