What creates the html/js files for the TemperatureWebPanel example

I cannot seem to figure out where the files are added to the SD card. I think the IDE does it but how does it know what to push out?

Can I edit this per sketch?

Thanks for reading

If you at the folder containing the example, you'll see a "www" folder. Those files are copied when you upload via wifi
Check out this Hands on: the Arduino Yún's Bridge | Arduino Blog