Use Autodesk Design Review to insert markups into a DWF or DWFx file. A markup is a single comment or a redline geometry correction inserted into a DWF or DWFx file.
Using Autodesk Design Review, you can add markups electronically, just as you would mark up a paper version of the drawing. You can also assign a status to the markup and add comments.
The markups and their status are saved in the DWF or DWFx file.
For more information about creating markups in Autodesk Design Review, see the Autodesk Design Review Help documentation.