Take a temporary look at the dimension and alignment constraints in a view, to troubleshoot or modify elements in the model. 
  
- On the View Control Bar, click 
			  (Reveal Constraints). 
		    The Reveal Constraints drawing area displays a color border to indicate that you are in Reveal Constraints mode. All constraints display in color, and model elements display in half-tone (gray). (Reveal Constraints). 
		    The Reveal Constraints drawing area displays a color border to indicate that you are in Reveal Constraints mode. All constraints display in color, and model elements display in half-tone (gray).Note: To make it easier to see the constraints in this mode, make sure that the Thin Lines display option is not selected (View tab  Graphics panel    Thin Lines). 
			  
 
- Select a constraint to highlight the elements that are constrained. 
		   In the following example, the constraint on the left is selected, and the 2 walls and 2 windows that are constrained are also highlighted. 
			 
 
		  
- Optional: Remove the constraint by simply deleting it, or by unlocking it. 
		    
			 Note: Constraints that were added in sketch mode for an element display in half-tone color. Double-click the element to enter sketch mode to modify or remove the constraint. 
			  
- On the View Control Bar, click 
			  to exit Reveal Constraints mode. to exit Reveal Constraints mode.