Here are a couple of hints:  

If you have a user exit function module: EXIT_SAPLEINM_014

1) Fire up SE37 to get the development class ME

2) Fire up transaction CMOD and go to menu option Utilities -> SAP Enhancements

3) Enter the development class ME and execute. This will list all the enhancements available in that development class. Double click at leisure

 

For those wanting a more scientific method:

1) SE16 with table MODSAP - Enter the function module in MEMBER and execute (e.g. EXIT_SAPLEINM_014)

2) NAME is the Enhancement

3) To find the project that the enhancement is in:

4) SE16 with table MODACT - Enter the enhancement in MEMBER and execute (e.g. MM06E001)

5) NAME is the Project to use in CMOD