"Nah, for unbound specified-individual circles it's just literally a circle with 'I summon the demon Campbell Mark Swan' written around it. It's bindings that get complicated. You might be an angel or a fairy instead - or maybe it won't work at all, because alternate universe - but otherwise the format's the same. The would-be summoner should finish enclosing the circle last, and it must be completed on a floor, in any drawing material, with enough room for us to appear - if you're doing bindings it's polite to leave still more room than that because we couldn't leave until attached to a task but that's not an issue here."