The COMSOL File Formats > Serializable Types > Geom3

Geom3
Supported Versions
1, 2
Subtype of
Serializable
Fields
The class is defined by the following fields:
Description
The type represent a 3D geometry class.
The type can be 0, 1, 2, 3, or 1 for point, curve, shell, solid, or general objects, respectively.