Model-Based Definition > Model-Based Definition > Annotation Features > Creating Annotation Features > To Create an Ordinate Baseline
  
To Create an Ordinate Baseline
1. Define the active annotation orientation before creating the first annotation in any session.
2. Click Annotate > Annotation Feature. The Annotation Feature dialog box opens.
3. Click . The Select Reference menu appears enabling you to select an entity or a surface as the baseline reference.
4. Click or on the Select Reference menu.
5. Select an edge or a surface, drag the pointer outside the model, and middle-click to place the base dimension.
 
* If Creo Parametric cannot determine the direction of the witness line of the ordinate baseline, it prompts you to select an additional reference to define the direction of the witness line of the ordinate baseline Annotation Element. Select the additional edge or surface reference to define the direction of the witness line.
The ordinate baseline Annotation Element is added to the Annotation Feature dialog box.