To identify differences between two 2D sheets
panel
. 
The dialog box opens.
The dialog box opens.
The sheets are shown in the dialog box.
,
, or
buttons. The dialog box opens.
Change the colors of the and markups once the comparison has been made.
Click .
Once the comparison has been performed, the original DWF file sheet may show differences on the canvas that can be saved or printed. The differences are also shown in the palette as “Additions from comparison...” and “Deletions from comparison...”. These comparison markups can be deleted if additional comparisons are required.