Detailed Drawings > Defining the Drawing Layout > Working with Model Views > Customizing Drawing Views > Displaying Sections of Views > Modifying Cross Sections > Displaying Cross Section Datum Planes
  
Displaying Cross Section Datum Planes
Using the Show Model Annotations dialog box that appears when you click Annotate > Show Model Annotations, you can display set datum planes in area cross-sectional views. Set datums that you display this way behave identically to those in other views; you can perform all usual detailing operations on them, including dimensioning.