Thank you claudiabdm! It's works 100% for me. X/Twitter was driving me insane. Thanks again!

Perhaps you could add a dark theme to the main view box? Right now it's only possible to view the marks with a light theme - a dark theme alternative would be much appreciated.

Also, it'd be nice if there are shortcuts like a hotkey config for the first mark created or something added to the add-on too.

But overall, it's a good add-on! It does exactly what it says on the description.

Hi ! :)
its a good job!
is it possible to attach marks to the left sidebar? Or attach marks to scrollbar with its names?
that would be awesome! and 5 stars.^)

UPD:
Perhaps you could add to the settings an option to choose where to display it -- in the sidebar or on the scroll bars.