ABAP ROUTINE ICON

Hi Gurus,

I wanted to customize the methods(WDDOAFTERACTION,WDDOBEFOREACTION,WDDOEXIT,WDDOINIT,WDDOMODIFYVIEW,WDDOONCONTEXTMENU) present in the method tab of WEB DYNPRO .

The ABAP ROUTINE ICON through which i can edit the method is not present.

Kindly help me, if there are any suggestions to find the icon or any other way to open the methods present in method tab.

Regards,

Santhosh