i@layer
Controls soft priority of collisions. Only greater/less matters, not magnitude of difference.
>Vellum attributes
Vellum Attributes のひとつ
直接計算に使用しているのは Detangle SOP.iconDetangle SOP
See also
i@disableself
i@disableexternal
f@overlap_self
f@overlap_external
s@collisionignore
s@collisiongroup