Well, this is very simple but I don't seem to be able to do this in PS. I want to select multiple non-consecutive lines. Normally, the drill is that you click in the line number. That selects the whole line. You hold down Ctrl (on Windows) and click on any other line number(s). This will select that line and adds it to the previously selected line. Etc, etc.
It doesn't seem possible in PH - unless I'm missing something.