When the Current Registers window is open, you can display the area of storage addressed by a general purpose register by placing the cursor in the register and pressing the correct PF key. Similarly, you can display storage addressed by the instruction address of the PSW. If the cursor is in an access register, commands that can use an access-list-entry token (ALET) use the contents of the access register in addition to the contents of the associated general purpose register.

The same things can be done in the Old Registers window as in the Current Registers window.

When a Dump window is open or when the Disassembly window contains storage being dumped, a full word memory location may be used to specify the next area to be displayed by positioning the cursor in it and pressing a PF key. This is useful for following a chain of control blocks.

When a Disassembly window is open, you can set breakpoints by positioning the cursor on the desired instruction and pressing a PF key.

z/VM

When a Dump window is open or when the Disassembly window contains storage being dumped, you can set PER address (storage alteration) stops by positioning the cursor on the desired location and issuing an ADSTOP command.