- The calling procedure pushes the addresses of the actual arguments (pointers) onto the stack in the reverse order of their appearance in an argument list. In other words, the address of the last argument is pushed first and the address of the first argument is pushed last.
- A call to a function returning one of the data types that requires a return temporary must push a pointer to the area for the result value onto the stack.
The external procedure is called by executing a CALL instruction.
