Setting of tab behavior

Hello,


In Options Internet, then Tab button, there are two options to check/uncheck :

- Activate tab groups
- Open each tab by the active tab

The second option is checkable/uncheckable only when the first one is unchecked (that is to say tabs grouping deactivated)

I performed essays with the second tab checked and uncheked: I didn't note any difference in the behaviour of the opening of a tab. So I don't understand what means "Open each tab by the active tab"
Could someone explain it to me ?

I think it means when you open a new tab, it is placed next to the tab you are using rather than at the end of the tab row.