How can I access this "hidden preferences"?

I would like to do this:

“PersistentSortingOfSearchResults: Retains the last sort method used in database search results.”

And I found this explanation. But I don’t understand it. Could someone perhaps clarify this with a screenshot? Thank you very much!

“You don’t need to use Terminal for this.
Control-click the On link for the preference and copy the link. Paste it into the address bar of Safari, okaying opening DEVONthink.”

this should help:

Appendix > Hidden Preferences in the built-in Help and manual


Perfect, thank you @vinschger !