LOOK

LOOK, well, looks at something and sees what you can see. You can also look in many types of items like light sources to tell how much fuel they have, look in guns to see how many shots they currently have loaded, look in vehicles to see how much fuel they have.

LOOK <direction> will often give you clues if you're about to walk into danger or help you get your bearings. Not all exits have look at descriptions but the important ones should.

LOOK ROOM will always give you the room description and its contents even if you have BRIEF configured to only give room titles as you move around.

EXAMINE is short for 'LOOK container' followed by 'LOOK IN container'.