TXT Key and Envelope Key

[andrewz76]

The Touch Pro changed a few dedicated keys that were on the keyboard compared to the 6800. Have you guys come across any way to change the functionality of either the "TXT" or the envelope key on the keyboard. 'd like to modify the envelope key to open the start menu. The 6800 had a dedicated start menu button on the keyboard which I used often but it has been lost on the touch pro.

Thanks,
Andrew