http://www.autodesk.com/products/autocad-structural-detailing/overview
AutoCAD 2011 Structural Detailing Tutorial: Reinforcement Bar Definition
Learn about the enhancements have been made to the reinforcement bar definition feature such as automatic recognition of a bar shape and the ability to assign the correct shape code to it. This option is available for all types of reinforcement definitions such as manual bar definition, surface reinforcement, reinforcement defined by using macros, and for drawings imported from Autodesk Revit Structure and Autodesk Robot Structural Analysis.
Source: Autodesk
