Thank you very much Flex,
- For deleting variables in the subroutines and displays, I did it manually and made sure that the variables are removed (MB initialized ; MI, ML, T set to 0 ; etc.). it was long and tedious but now it is fine.
- And yes, for deleting subroutines and displays I did it like you said: deleting calls for the specific subroutine and display I wanted to delete.
Thank you both for your help !
Al.