Reference sets are often used to create variances of the CAD data, essentially a new part; for example, engine.prt could contain 2_liter and 3_liter reference sets. When converting this variance type of reference set, the CAD data name must take the following form:

For example, to convert the 2_liter reference set within the engine.prt, use:

Reference sets are also commonly used to create a simplified form of an assembly. To convert a simplified form reference set, the following syntax must be used:

For example to convert the cut_away reference set of engine.prt use:

These tags can be combined to convert a simplified form reference set of an variance reference set as follows: