Chord Snapping
There is a feature available within Rigging Objects called Chord Snapping. This enables Lighting Devices and other Load objects to locate the core of a pipe or linear object.
Truss Symbols
The Truss Symbols have been created using some simple conventions that users should have an understanding of.
Truss Properties

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Truss
Temporary structures are an essential part of the events and entertainment industries, and the triangular components that Truss uses in its construction have become a ubiquitous part of the design aesthetic for thousands of events around the world.
Truss Tool

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Curved Truss Tool

The Curved Truss tool is a plug-in object that will model a length of Curved Truss in full 3D to your specifications. Like all Plug-ins, it creates a 2D representation as well.
Straight Truss Tool

The Straight Truss tool is a plug-in object that will draw a length of Truss in both 2D and 3D.