Perform an advanced scan of applications and macros for previously unknown viruses. Virex scans for virus-like activity inside programs and macros.
If you suspect a file is infected, you can choose to remove all macros from a data file to prevent any exposure to a virus. To delete all macros in a file, use the Remove macros ... option in the Clean area. We recommend that you perform an advanced scan when your computer activity is low.
If you use these two options together, Virex deletes all macros even if Virex found no infection.
This information and more can be found at http://virexhelp.com