What's New: Creo Parametric 4.0 > Model-Based Definition > Specifying Fully Semantic References for Datum Feature Symbols in Model-Based Definition
  
Specifying Fully Semantic References for Datum Feature Symbols in Model-Based Definition
You can add model surfaces as semantic references.
User Interface Location: Click Annotation > Datum Feature Symbol.
Release: Creo Parametric 4.0
Benefits and Description
You can watch a video that demonstrates this capability.
Datum feature symbols support semantic references to model geometry. From the Datum Feature tab, you can add model surfaces, planes, and axes as semantic references by clicking References to open the References dialog box. If the datum feature symbol is placed directly on a surface, this placement reference becomes a semantic reference, but you can also select additional model surfaces as semantic references if needed. You can also add a plane or axis entity as a semantic reference. If the datum feature symbol is placed on another annotation, then no semantic references are automatically added, however, you can always specify them using the References dialog box.