Single keyboard command in legacy Open dialog box to move the cursor to the file list

[xoubie]

I don't use the Backstage and still use the old legacy Open dialog box to open documents. I have not found a single keyboard command to move the focus and cursor from the File name: input box to the documents list. Like how for example Ctrl+F moves the cursor into the Find input box.

I am aware Shift+Tab TWICE does it, but it feels like an obvious shortcut that should exist is missing, one I would use several times a day. Oddly, Shift+Tab TWICE doesn't even select the first document in the list, it places a box around it and I have to down arrow and up arrow if I want to select the first document in the list.

[Guessed]

I don't know a single keyboard shortcut to move the focus to the folder/file list but don't find Shift-Tab x2 to be that onerous.

If you already know what letter(s) the file starts with just type that letter(s). The Filename box will display a dropdown list of the files that start with that letter(s) and you can then press the down arrow to select and Enter to open your selection.