Maximize World On Connect?

I've been using MUSHclient on Windows 7 for a while now, and there's one oddity that I've been noticing. I prefer to have my worlds maximized, and use the activity bar to flip between them, but I cannot find any setting or check-box to enable that fulltime. At one point, I found some pointer in a dark corner of the internet that let me send some archaic macro command to the client, and sure enough, it now works for that one world. But I can't find the command anymore, and I'm wondering if anyone might know what it was off the top of their heads?