Function
By placing this onto the end of a command line, you will launch the interface,
and load the command line as the initial tree. For example, if you type
shake uboat.iff -flop -over parrot.iff -gui
you will have two FileIn
nodes (named FileIn1 and FileIn2), with FileIn1 loaded
into the Flop node, both
of which are loaded into an Over node.