A feature control frame is a group of symbols that contain information about conditions and tolerances of a geometric object, typically a part.

For more details, see the following topics:

Overview of Feature Control Frames

Specific Properties of Feature Control Frames

Example of Working with Feature Control Frames

OdDbFcf Class in API Reference

A sample command for working with feature control frames is located in the Drawing\Examples\DevGuideCommands subdirectory of the ODA installation folder.