Knowing what is skype
Information about skype is easy and clear
Google and other operator find directly skype when searched for the
Homepage clear and good explanations
Very good links to get back or to other fields on the homepage
determine the function? (goals)
tell what actions are possible? (intentions)
determine mapping from intention to action? (sequence)
perform the action? (execution)
tell the state of the system? (perceiving)
tell if system is in desired state? (evaluation)
A particular slide catching your eye?
Clipping is a handy way to collect important slides you want to go back to later.