Using LXDE I think can be useful to add accelerators to select desired item.
Underline can be added to letter used as accelerator.
Without accelerator we can select items only using mouse or arrow-keys on the keyboard.
I prefer to use keyboard to select frequently used program, I have configured W-space launching "lxpanelctl menu" to show main menu, then I'd like to press A to select Accessories and I to select Image viewer.
Thanks a lot for the LXDE environment, I prefer it to others
sorry for my poor English.