#### Trim Preference

The Trim Preference area determines how trimmed surfaces should be represented inside PC-DMIS.

Select the UV Trim option to trim the surfaces in the parameter-space of the surfaces.

Select the XYZ Trim option to trim the surfaces in model-space.

In theory, the resulting translated model should be the same regardless of the selected trim option. However, if you’re importing poorly defined models, the option selected often makes a difference in the results. In general, selecting UV Trim will produce the best results.