Is there a shortcut to switch to differential pair routing mode?

Does anyone know if there is a shortcut to switch to differential pair routing mode in layout?

I’ve opened a wishlist bug for it, feel free to add your vote: https://bugs.launchpad.net/kicad/+bug/1531028

Duplicating bugtracker reply here:

There are shortcuts, but they’re not documented (I added them for development/testing purposes). In the future we’ll make them configurable.

6- place diff pair
7- tune track length
8 - tune diff pair length
9 - tune diff pair skew