Traktor 3 had Midi pages for changing functions of the buttons and knobs. Traktor Pro has Midi Modifiers which basically is like midipages on steroids. You have eight modifiers which all have eight positions and the possibility to have two modifiers, so that’s 8*8*2= 128 functions per button.
You can make a button for instance do one function when Modifier #1=0 and one function when Modifier #1=
You can make a button for instance do one function when Modifier #1=0 and one function when Modifier #1=