What on Earth is the purpose of Safari 17 > Prefs > Feature Flags?
I've got absolutely zero idea what a single one of the options in that pref pane controls, so I've just left its default state as is.
I found this in webkit
, but unless you are q developer it probably won't mean much. Suffice it to say Safari 17.x is the biggest webkit upgrade ever ;but there are a lot of features that are still under consideration andd/or development and the standard has not been finalized. The flags indicate the status of these features and allow the user to turn them off and on. Think of them as a glimpse of the internet of tomorrow.
Personally I don't use custom style sheets and plan to leave everything as is.