I'm still surprised that in the age of search engines people still can't investigate and dig a little on their own... sigh. Anyway, here's some screenshots to give you a better idea
http://en.wikipedia.org/wiki/Image:Bruteforce.jpg
http://en.wikipedia.org/wiki/Image:DeusExscreen04.jpg
notice the brackets. They apply to world objects as well, and it's far easier to control them than in MI4 for instance because you control the character with the mouse, in first person. It should be easy to pick up on it and tweak it a little to adapt it to an adventure game.