I know about clicking G to change from last century's Imperial measurements to Metric ones, and someone told me that Ctrl H turns the switch arrows on and off(although that doesn't seem to work reliably for me), but is there a whole list of other keyboard commands that could be useful? I tried searching at Trainz Help, but it didn't help and I didn't think it deserved a ticket, but undoubtedly one of the geniuses here know this sort of stuff!