how to get the list of function modules in hr..
Go to transaction se37 and press key F4 on the input field 'Function Module'.
and if want to search a specific FM, give the function Module related terms enclosed in **. for example if u wnt to search for FM "HR_READ_INFOTYPE", and you are not sure of name, give HRREAD* and press F4.
It will give you a list of FM's which have these terms.
Hope it helps you.
Reward points appreciated.