FILM Subroutine File

Hello, 

I'm very new to Abaqus and FEA in general. I'm running a sim with a convection interaction which requires the FILM subroutine. I understand the FILM subroutine is included in Abaqus standard, but I can't find the subroutine file for the life of me. In what folder should I expect subroutines to be stored upon install?

Thanks in advance for the help!