I'm pretty sure you can just open the outfile/potfile with any spreadsheet viewer/editor as a CSV file where the separator is just ":" (or the -p command line value).
I'm not sure why some people need to have large list within a spreadsheet, though. I would say it's discouraged to do so... it most of the time doesn't make any sense (but of course there could be exceptions). The format is already good and you could just open it in any fast/advanced text editor... or even parse/filter/grep it with command line tools (for instance "cut"/"grep" on linux)
I'm not sure why some people need to have large list within a spreadsheet, though. I would say it's discouraged to do so... it most of the time doesn't make any sense (but of course there could be exceptions). The format is already good and you could just open it in any fast/advanced text editor... or even parse/filter/grep it with command line tools (for instance "cut"/"grep" on linux)