MBE Dictionary -

QIF : Quality Information Framework

a control placed on an element of a feature such as its size, location or form, which may be a specification limit, a nominal with tolerance, a feature control frame, or some other numerical or non-numerical control.

Alternate Definitions:

Model-Based Characteristics (MBC) - A trait, quality, or attribute on an element of a feature such as its size, location, form, or property, which may be a specification limit, a dimension with tolerance, a geometric tolerance within a feature control frame, or some other numerical or non-numerical control.