Björn Bringert's tram grammars (user side, without place names)
implemented as an example of lib/resource/abstract/Multimodal.

For documentation of the original system, see 

  http://www.cs.chalmers.se/~bringert/gf/tramdemo.html

To try, do in gf

  i -src TramEng.gf
  gr | l -tr | p

Clicks appear as coordinates on the right of the semicolon.

AR 7/11/2005.
