look

For studying your surroundings. Examples:
look                                      
look AT the angel   (just type: look angel)
look IN the bag     (or   type: exam bag  )
look to the south   (just type: look south)

Note that if you LOOK AT CORPSE you will not see its inventory.
To see what's inside a container (i.e. a corpse) use LOOK IN <OBJECT>.