Rollups
Subobject Seleciton Rollup

The Subobject Seleciton rollup contains all the selection related tasks. All of them are UV SHELL BASED, which means that the system handles a UV SHELL as an INDIVIDUAL OBJECT.
For example if you perform a Loop or Ring selection, the loop won’t go through the seam.
To perform a certain selection on an object, you have to select at least one edge on a shell to count it into the modification of the selection.
Loop and Ring

Select By Smoothing Groups

Select By Material IDs

Select By Seams

Select Edges By Angle
