F13, F14, and F15 now work, F16~F24 still work as keybinds, but display as "UNEXPECTED_KEY_ID"
Found that this is almost certainly related to missing DIK keycodes
These I believe are the missing DIK code and scancode lines, from "\a3\ui_f\hpp\definedikcodes.inc"
Reference I found for DIK codes: https://community.bistudio.com/wiki/DIK_KeyCodes