One handed side menu topic

Hello I'm an android newbie awaiting my opo. Before I ordered it I tried a note 4 in shops and the lady there demonstrated a function where I could double tap the bottom right button and it would bring an app tray down the right hand side of the screen for easy one handed operation. I think this is a TW feature but does the cm11s ROM give any kind of function like this? If not what could be done to get something like that? It looked really handy.

I had a quick search but didn't find anything on this. Thanks


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