Design elements in a hierarchical module that are assigned RLOC constraints are automatically grouped into an RPM set.
The grouping occurs by using an H_SET constraint that is implicitly defined by the combination of the design hierarchy and the RLOC constraint.
All design elements with RLOC constraints in a single block of the design hierarchy are considered to be in the same H_SET unless they are tagged with another set constraint, such as U_SET or HU_SET.