1. Launch AutoCAD. 
2. A new tab named “DWG/DXF Compare” will be created in the ribbon bar. The ribbon bar is at the top of the application. 
3. Click the “Compare” button from the Tool. It will show you a Comparison palette. 
4. There are 2ways to compare drawing files:
   
   A. Browse and compare 

• • Click “Browse File 1” for selecting the original file for comparison. 
  • Click “Browse File 2” for selecting the changed version of the file. 
  • Click “Comparison Folder” for selecting the path at which the result of the comparison will be stored. 
  • Click the “Compare” button to start the comparison, “Cancel” otherwise.

           
     B. Compare existing files.

• • You can also compare already opened files. 
  • Choose “Select Existing files” and you will see a list of open documents. 
  • Select any 2 documents and hit the compare button.

Install:
The installer that ran when you downloaded this app/plug-in from Autodesk App Store, will start installing the app/plug-in.
                                                             OR
Simply double-click the downloaded installer to install the app/plugin.

Uninstall:
To uninstall this plug-in, exit the Autodesk product if you are currently running it. Simply rerun the installer and select the "Uninstall" button.
                                                                              OR 
You can uninstall it from 'Control Panel/Programs and Features' (Windows 7/8.1/10), just as you would uninstall any other application from your system.