I am trapped in the game world. There's no obvious portal out, there's not command to leave. The /town command just takes me back to the start of the game selection area. /home doesn't work. There's no one in chat. There's no obvious command to escape. What do I do?
Actually /smp# is the right answer. EMC has several servers which you can visit, and the commands to do so are considered basic knowledge (however: you should have gotten some in-game hints about this). So to 'escape' the game server is very easy: /smp2 (for example), that would land you on the SMP2 server. /smp3 on three, and so on. This works all the way from 1 to 9. And of course /utopia. So: do /res to check where your home server is, then use /smp# to go back there, optionally followed by /home to go to your home residence if you weren't there already.