how to sit on steps
Consider the pitch
of the steps. If you are in the center
away from the edges and there is sufficient pitch you can sit with your legs crossed (almost Indian style) on the step one level lower from you. If there is not
sufficient pitch, your legs should be uncrossed and two levels lower from you.
Consider walls. You can sit with your back against the wall and your legs either on the same level as your body or one level below, crossed or uncrossed.
Consider area. If the steps are far-ranging, as on a significant public building, sit wherever. You could play cricket and not get in anyone's way. If the steps have more strict parameters, sit to the side so you don't inadvertently disgruntle someone and get yourself shot in the head.
Consider time. If you have a self-amusing personality, just sit. Or take the Gameboy, the mp3 player, and the pokemon. These kids today...