How to scroll to top in ISPF Edit or Browse?

On the command line type m (for max) and the direction you want to go to. So, :0 would be m,.

Alternatively, top followed by will also take you to the top.

Also you can enter m in the command line and hit up or down pf keys (Pf7 or pf8). You can enter a number on the command line (say 50) and hit Pf7* or pf8 to go up/down 50 lines.

There are also use the top and bottom commands (aliases of up m and down m) commands (enter in the command line or assign to a pf key).

Finally you could create a rexx macro and enter it on the Command line or via a pf key - a bit pointless for something this simple