1 Understand the user.
The more the interface is closer to the user, the more people will accept and like it.
2 facing users
The user interface is equivalent to the map. Clear structure, in any place, users can know where they are, where can I go.
3 exact prompt information
For many users of the program, there is no contact with the function of contact or not understand, give a concise, friendly, and clear prompt information.
4 Try to keep consistency with other general programs. Depart from the user's habit.
