If you need to look up something in the AutoCAD 2013 Help documentation and do not have access to AutoCAD, you can always visit the online documentation site. http://docs.autodesk.com/ACD/2013/ENU/index.html
You can send a direct link (long link) to specific topic to a coworker such as this direct link to the Hatch topic.
http://docs.autodesk.com/ACD/2013/ENU/files/GUID-27C104F2-B687-4025-B50B-A58E37329832.htm
You can also download an offline version of Help if you need that.
Offline Help Download http://www.autodesk.com/acd-2013-helpdownload-enu
More Autodesk products online documentation are available:
http://usa.autodesk.com/support/documentation/