"run ksh file and .profile" problem

When i install an application and create  a file named   orproduct_profile.ksh.

According to the guide book:


5.5 The installation script sets your environment with the provided values and
saves it in the orproduct_profile.ksh file in $OPRODUCT_ROOT.


5.6 Add orproduct_profile.ksh in your .profile file. To set up the application  environment,
execute your .profile again, or the user must login again.


But i don't know how to  " add orptoduct_profile.ksh" in to my .profile.  Could u tell me how to do this

Thanks!