Added direction configuration switch.  Modified help.
Added direction configuration switch.  Modified help.

ivoflipse/devide,nagyistoce/devide,chrisidefix/devide,ivoflipse/devide,chrisidefix/devide,fvpolpeta/devide,fvpolpeta/devide,zhangfangyan/devide,zhangfangyan/devide,nagyistoce/devide