Looms are the only virtual part type that you can assign to multiple segments. You can also assign more than one loom to a single harness. Because of this, looms are assigned an order and an ID for tracking purposes.
Loom order is based on when and where the loom is placed in the harness. For example, you can place a piece of shrink tubing on a bundle of wires (loom order of 1), and the bundle of wires in a mesh braid (loom order of 2). Loom order also determines the size of the loom to attach.
Looms are named using the Loom ID along with a portion designator. A portion designator is needed when you assign a single loom to multiple segments. For example, if you assign one loom to two contiguous segments which make up a longer bundle of wires, the loom is divided into more than one portion. You can assign each portion to a different segment. If the loom assigned to the two segments had a Loom ID of Loom1, the first loom portion occurrence is named Loom1:1 and the second Loom1:2. Loom ID also links the individual looms from each segment so the BOM counts it as one piece with a cumulative length of all segments.
The loom definition for the occurrence changes to the definition of the selected loom.