This clause explains the specific GD&T (Geometric Dimensioning
and Tolerancing) and other PMI (Product Manufacturing Information)
capabilities of IDA-STEP.
GD&T is supported in two ways in parallel: semantically and as
presentations/annotations. The semantic form is computer
interpretable and thus allows automated funxtions like validation,
inspection and more. The presentation/annotation form is for human
reader. The supported PMI elements are: