XaoS command language lacks any control contstructions like loops, if etc,
since it is expected that scheme interpreter will be used in case such thinks
will be required.
This function loads and interprets file. It works in similiar way as include
This function reset XaoS state to default values from version 3.0. This
command should be at the beggining of each animation file, since otherwise
some stuff previously enabled by user should make inexpected effects.
State is not reseted by default before playing animation since it should
make impossible to write macros. Current version IMO don't need them, but
in future versions, where scheme programming language will be available this
should be much more interesting subject.