ROD objects

The result of merging ROD objects is a ROD object. Merging a ROD object with any non-ROD shape produces a non-ROD shape. If the ROD objects being merged are on the same net, the resultant ROD object retains the net. If the ROD objects being merged are on different or no nets, the resultant ROD object will not be on any net.

The result of merging two identical multipart paths (MPPs) is an MPP only when the merging of their master paths results in a path and not a polygon. If the result of merging the master paths is a polygon, the resultant is a ROD object. However, the subparts are not ROD objects; only the polygon on the base layer of the MPP is a ROD object.

Blockages

The Merge command merges blockage objects in the same way it merges polygons.

• If one or all selected blockages are attached to the same instance, the resulting merged blockage will remain attached to the instance.
• If the blockages are attached to different instances, a scroll list displays so that you can choose which instance will own the resulting merged blockage. One of the options is no attachment.

Boundaries

The Merge command does not support PR and snap boundary objects.

• If an area boundary object merge involves more than one constraint group, a scroll list pops up, allowing you to choose the constraint group for the merged area boundary. You must also rename the area boundary.
• If a cluster boundary object merge involves more than one cluster, a scroll list pops up, allowing you to pick a destination cluster. You must also rename the cluster boundary.