Each object has an ID number (the 'dbref'), which appears after the name of an object, and is followed by any flags on the object; i.e. foo(#3672PM) is a Player, Male, named foo, with #3672. This number is a database reference, and is used to specify objects at a distance; i.e. ex #<room ID number>. You will only see the ID number of objects you own, or which are set LINK_OK, ABODE, or CHOWN_OK. Wizards can see the numbers and flags on all objects. See also FLAGS.