object type and id

hi gurus,

need ur help!!

according to what i read i came to know that

object type is used for the representation of OBJECTS that is used to identify the objects.

An object type lets you classify objects according to features and types of information and arrange them in categories.

cud any1 plz give me any example of object.

i know thw object type are

job

position etc

and one more thing

what does the f.m RH_STRUCT_GET do

THANKS AND REGRADS

anuj.