Choosing the form

OSREQ is available in three forms, summarized in the following list:

MACRO FORM: DESCRIPTION
List (MF=L): Generates a parameter list that can be used with the other forms of the macro.
Modify (MF=M): Updates the parameter list with new parameters (specified when the modify form is invoked).
Execute (MF=E): Initiates execution of the actual object request; also updates the parameter list if new parameters are specified when the execute form is invoked.

Each form supports a variety of functions. These functions are described in What you can do with OSREQ. Subsequent sections present detailed information about coding and invoking the macro to perform these functions. Use of the OSREQ macro must take into consideration both the programming language techniques and the environment in which the program executes. These issues are discussed in Usage considerations.