[newRPL] What do we use touch for?

[Claudio L.]

We finally have functioning touchscreen drivers on the Prime G1 port.

First question that comes up is: now what?

* The obvious is to press the menu items directly on the screen.

We could also use it to manipulate the stack, but how exactly? We are open to proposals.

I'll throw a bone to start the brainstorming:
* Dragging up and down on the stack would simply scroll to see more elements
* Press and hold would start the interactive stack mode, then "grab" an element, maybe we drag and drop it to a new location in the stack?

What about removing an element in the middle of the stack? That typically takes a few keystrokes of the interactive stack, maybe it can be done with touch quicker? How?