The MX (Modify eXtended) line command can be entered against regular files in the directory list. This line command causes the Modify z/OS® UNIX File Extended Attributes panel to be displayed. This panel allows you to modify the extended attributes for the selected z/OS UNIX regular file. These attributes only affect files that are programs.

The Pathname field displays the path name of the selected file. The Type field display the file type for the selected file.

These optional input fields allow you to modify the extended attributes:

Use Shared Address Space

When this option is selected, ISPF sets the extended attribute that makes the program eligible to run in a shared address space.

APF Authorized

When this option is selected, ISPF sets the extended attribute that makes the program eligible to run APF-authorized if it has been linked with AC=1.

Program Controlled

When this option is selected, ISPF sets the extended attribute that makes the program eligible to run as if it were from a program controlled library.

Shared Library

When this option is selected, ISPF sets the extended attribute that causes the program to be loaded from the system shared library region.