LISTBOX: can it contain a code to underline a letter?

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Morning,

I have designed a ListBox that has content like:

(A) Item one
(B) Item two
© Item three

in that pressing the letter in parenthesis acts as a hotkey and executes the line's command (see attachement)

MY QUESTION: can you embed a letter code for any letter, so that it is underlined in the ListBox? -and thus have the appearance of the 'alt key' in a normal menu?

Thanks,

Kent