A new menu entry 'Options | Map Key Codes' allows you to now specify the characters/key codes you wish to use with your bluetooth device (eg footswitch), and which functions these are mapped to.
The 'Next Song' and 'Previous Song' are used for stepping through a set list.
The 'Solo On/Off' is used to control the 'Boost' 'Solo' function
The other 'Toggle' functions switch the respective effect 'slots' on and off.