PDM is installed on all AS/400 systems, and is a part of the Applications Development ToolSet. PDM is an environment that lets programmers and/or operators navigate three levels of the PDM: 1) the library level, 2) the object level, and 3) the member level.

To start PDM, choose option 5 from the Main menu (Program menu). Next, choose option 2 to get to the PDM menu.
To go directly to the PDM menu, you can also type in the following command into a command line: STRPDM (stands for Start PDM).
Other "work with" commands for the designated levels of PDM are as follows: WRKOBJPDM (Object level).

Sources

• Fottral, Jerry. (2000). Mastering the AS/400: a practical, hands-on guide. 3rd ed. ISBN 1-58304-070-6