The following buttons control the analyser.
The action buttons start and modify the analyser as follows:
Start: Runs the analyser with the current parameters.
Refresh: Refreshes the page analysed by connecting again with the server. 
Stop: Stops the analyser when the analysis of the current page is finished. 
Pause: Pauses the analyser for a moment when the analysis of the current page is finished. The user can stop the analyser completely by clicking the Stop button. It is also possible to restore it by clicking the Start button.