First, you have to enter an URL into the textbox. After clicking on the "Go!" - button, the tool is loading the page and evaluates the code.

CAC - Tool lists the faults and hints in a table. By clicking on a row, the tool scrolls automatically to the position of the fault in the HTML - area.

In this area, all incorrect code is coloured so you can find the faults and hints very easy. By clicking on "Help" - button the guide, you can also find on this page, will be opened. When you click the "Save" - button all your changes you' ve made in the HTML - area can be saved to a specified file.