To Switch Dimension Format to Symbolic
When you click > 
Relations, Creo Parametric switches the dimension display to symbolic format (for example, d0).
Relations, Creo Parametric switches the dimension display to symbolic format (for example, d0).You can switch between symbolic and numeric dimension formats in one of the following ways:
• In the Relations dialog box, click > .
• On the menu bar, click > .
 | If dimensions are not already displayed on the model, select the feature or part whose dimensions you want to display. |
 | Symbolic tolerances appear only for dimensions with plus-minus or symmetrical formats. Other format types display only the dimension symbol. |