Hello Vinayak
Sorry,It is context objects..
Below links help how to use Context objects
http://scn.sap.com/thread/1804007
http://help.sap.com/saphelp_nwpi71/helpdata/en/d6/e44fcf98baa24a9686a7643a33f26f/content.htm
http://help.sap.com/saphelp_nw73/helpdata/en/e3/33ec57bfbc4cc4b17a96af3f4a0691/content.htm