ISPF enables you to edit host data on the workstation, and workstation data on the host. ISPF calls this function distributed editing.

The ISPF Workstation Tool Integration dialog, or tool integrator, is a workstation customization tool that enables any workstation application to use data from an MVS™ host system. After setting up the tool integrator, your workstation-installed applications can interact with the ISPF View and Edit functions and services. Data flow goes both ways with the tool integrator connection. You can work with workstation files on the host or with host files on the workstation.

Overall, the tool integrator enables MVS-based users to use workstation applications and then share data through MVS. MVS, its file system, and RACF®, provide data integrity, security, and distribution capabilities beyond the workstation. Sharing data this way can reduce your installation's dependence on complex LANs, off-load CPU cycles to your workstation, and take advantage of workstation tools.