Need to have a backslash key
DOS file path requires a backslash character. The need for this doesn't come up often, but it does occasionally, e.g., editing an m3u playlist file on OneDrive or on a local network drive. On a computer keyboard, it is on the same key as the vertical bar, which you do have above the r key. You could add the Backslash as a second choice there.
Press the 123 button, then press the Punctuation button
Thanks for the tip on how to find the "punctuation" characters. I've been in need of the degree symbol and backslash several times recently.
Is there a mechanism for moving the cursor without deleting any characters?