Where to change the title?

Hi!

I just published my site, but I want to change the "Start | Grav" to "Start | Mypage".
In which file is this setting?

Grav

Thanks in advance!

Please, read the documentation: The part you are looking for is in http://learn.getgrav.org/basics/grav-configuration#site-configuration

Thanks for you reply, but after changing the site name it sill shows the same. Do I have to clean the cache too?

Ok, I found it by myself. Its not in the /config/site.yaml, its in the /user/config/site.yaml
Thanks again!