wumpus-basic

Copperbox revision 1748.

I've changed LRText - the monad is now called LRText rather than TextM and the run functions run it as a LocGraphic rather than run it in the Drawing monad.

Running as a LocGraphic is a bit more flexible that running in the Drawing monad. It also puts it at the same level in the "monad hierarchy" as textline - which seems correct.