8.9.12 Specifying the scope of alternative jumps and pop-ups
If all the jump and pop-up link references in your document are unique, and they are all in the same file as their corresponding hotspots, you do not have to specify a scope.
§8.9.12.1 Designating local-to-topic jumps and pop-ups
§8.9.12.2 Designating interfile jumps and pop-ups
> 8 Generating WinHelp > 8.9 Creating jumps and pop-ups for WinHelp > 8.9.12 Specifying the scope of alternative jumps and pop-ups