A solid is a planar entity that determines a rectangular solid area.

For more details, see the following topics:

Overview of Solids

Specific Properties of Solids

Example of Working with Solids

OdDbSolid Class in API Reference

Sample command of working with solids is located in the Drawing\Examples\DevGuideCommands subdirectory of the ODA installation folder (for example, C:\Program Files\Open Design Alliance).