[axis angle] or [x y z angle increment]
Changes current view by rotating around given axis (x, y or z) when two arguments are provided. It makes a continuous rotation around give axis when 5 arguments are provided. Note that the X axis is aligned horizontally, Y vertically and Z is out of the screen plane.
>>rota x 90rotates the structure 90 degrees around the x axis.
>>rota 0 0 1 90 1rotates the model in the screen plane (around z) 90 degrees with 1 degree increment.