Thanks for your reply.

1. Ah, I didn't realize these keyboard shortcuts don't need "Alt+". That answers this question, thanks.

2. Ctrl+U is underline, but I tried the usual Ctrl+Z for undo and Ctrl+Y for redo and found that they do work, but not fully as expected.

If I open a document, start a spelling check, and do an "Ignore once", "Ignore all", or "Add to dictionary" action, then the Undo button is enabled with "Undo spelling [action] (Ctrl+Z)" as its tooltip, and if I click on it, it works and enables the Redo button with "Redo spelling [action] (Ctrl+Y)" as its tooltip, and if I click on that it also works.

However, there are two anomalies:

- The Undo and Redo *buttons* (and the Ctrl+Y redo shortcut) work every time, but the Ctrl+Z undo *shortcut* does not work the first time it is used.
- When I reach either end of the undo/redo stack after doing a series of undo and redo actions, the spelling action shortcuts do not work as per their legends, and typing "I", "G", or "A" merely types that letter (instead of executing the corresponding "Ignore once", "Ignore all", or "Add to dictionary" action) and then replaces the action legends with a "Resume" button that works if clicked but not if "S" (or "Alt+S") is pressed as indicated.

Are these bugs or am I doing something wrong?