StackVertical/StackHorizontal
=============================

.. function:: StackVertical(clip[] clips)
              StackHorizontal(clip[] clips)
   :module: std

   Stacks all given *clips* together. The same format is a requirement. For
   StackVertical all clips also need to be the same width and for
   StackHorizontal all clips need to be the same height.

   The frame properties are copied from the first clip.
