Testing application in eclipse and dev mode

Hello there,

I am using SmartClient Version: v10.0p_2015-07-08/PowerEdition Deployment (built 2015-07-08) along with FF26.

I have a simple html login page and then after successful login I forward the user to the sgwt main html page. Now my question is in eclipse when I want do my testing and right click on my project and select Run as -- Web application,eclipse provides me with 2 html file. the simple login html page and the sgwt html page. Now i want to know which one should i go for or it makes no difference. Can somebody please explain this to me.

cheers
Zolf