Assuming we're thinking about the same thing -- the diagrammatic maps accompanying Wiki articles on particular former railway companies: I seem to be doing fully OK with them (last "experiment" to make sure, a moment ago), on my conventional "on one's desk" computer. My problem in this line is that I'm often too lazy to do the necessary logging-on, and rely (quite frequently with bad results) on what my brother calls the "dead-tree book".
Swansea Victoria