TWO :::Prove that your functional capacity for work (i.e. Residual Functional Capacity) is less than sedentary

This link will need to be copy, cut. and pasted into the box at the top of your browser.
http://www.socialsecurity.gov/OP_Home/cfr20/404/404-1545.htm

It is the actual page from the social security administration for Disability Evaluation Under Social Security(Blue Book- September 2008). It is Your residual functional capacity.