You can use the BROWSE command within ISRDDN to view the contents of storage within your address space. When you are browsing storage, you can use any of the standard ISPF Browse primary commands. In addition, there are several commands you can use to format and move around in the storage list.

If you are not using one of the special display formats (CHAIN, ARRAY, or ARRAYP), you can scroll UP even when the "Top of Data" line is displayed so that you can see what data exists before your requested storage location. After you scroll up once, you can scroll up or down to the limits of the contiguous addressable storage.