You can reach there also by clicking on the photo of the representative of the group on the front page. There is an icon of a house in the left corner of the upper frame. Clicking on it you can always get back to the front page. You can see another icon with the question mark in the right corner of the upper frame. Clicking on the icon gives you help information.
Lower frame is situated only on the front page.
The page of authors provides the names and addresses of people who carried out the project. It also has a section of copyright. However, some educational tasks are available only in Estonian. Right frame . All the Web pages, except the front page, have a menu of options on the right.