We’re all trying our best to ignore the Americans and you bring up m/d/y… why!

This is the real big-endian way. So your things line-up when you have all of these:

file_dialogue_open
file_dialogue_close
file_dropdown_open
file_rename
directory_remove

If I were designing a natural language, I’d put adjectives after the nouns, so you start with the important things first:

car big red

instead of

big red car

To be fair, it’s also missing open_dialog_file, dialog_open_file and most crucially file_open_dialog