Hi Pilou,
it's a work in progress at the moment so the final aim is to auto place objects touching or with a given gap.
If you place Barry.js in extensions you will be able to try the Collision.nod.
Draw 2 objects make them overlap and press run ( close error report ) and they will automatically move till they do not overlap.
To reset the quartz node value as to be manually reset to 0.
Cheers
Barry