This is a golem plugin that provides the popular interface found in NeXTStep,
known as a "dock", or sometimes (afterstep) as a "wharf".  This particular
version of this sort of interface has been called a "pier".

Application launchers may be placed on a pier, where the user may click them
to cause the program to open. There is support for afterstep-style "swallowing"
of apps, and for the WindowMaker style "docking".  The difference is that a
docked app renders into it's icon_window, whereas in afterstep-style swallowed app
it just renders into it's normal window.  You may move piers around by dragging
with the middle mouse button.

One other note: the two xpms included here come from windowmaker's
distribution, which includes a large number of useful little icons such
as these.  www.windowmaker.org is the url, and I suggest you check it
out; it's quite a well-made window manager.
