Function: windmove-right

Select the window to the right of the current one.
With no prefix argument, or with prefix argument equal to zero,
"right" is relative to the position of point in the window;
otherwise it is relative to the top edge (for positive ARG) or the
bottom edge (for negative ARG) of the current window.
If no window is at the desired location, an error is signaled. (fn &optional ARG)