I would like an object (a text box) to move on a straight line from point A to point B and back. I very much prefer achieving this on a single object (i.e. not creating additional text boxes), as I'd like to apply other animations to the whole motion path.

I've tried to edit the path points of some predefined motion animations like 'Square', but the results are unsatisfactory, as the object travels along a skewed, zigzag line.

Is this feasible?