Complex sentence: With a procedure that uses a stack frame, named LOCAL variables are used for readability purposes and where the address of the variable is required it can be accessed eith by the LEA mnemonic or in an INVOKE call by the ADDR operator.
Split into simpler sentences: With a procedure that uses a stack frame, named LOCAL variables are used for readability purposes. Where the address of the variable is required it can be accessed either by the LEA mnemonic or in an INVOKE call by the ADDR operator.