Hi

If you open about:config and select the "Show only modified preferences" any that you have changed (either directly or through use) will be highlighted.

It would be shown in the same way (existing) whether or not I did it. I need to know if it was there before my possible error.

If this is about a 'keyw' pref then you can start typing 'keyw' to see what comes up. Entries that have trashcan aren't there by default and are only present when they are created. You can click the trashcan to remove such an accidentally created pref.

Since keyw does show up, and does not have a trash can, I'm led to believe (improbably) that it is an original, default entry ?!?

Show only modified preferences keyw BooleanNumberString

Can someone just tell me if it is, or not, an original default entry???

Thanks !