Forneza manipulación directa

Wherever possible, allow users to act on objects and data directly, rather than through dialogs or explicit commands. For example, it is more intuitive to drag a circle object around in a diagram rather than selecting a "Move" command from a menu while the circle is selected. Simlarly, in an email application, allow the user to attach files by dragging them from the file manager and dropping them onto the message composition window if they wish.

Vexa Capítulo 10 ― User Input para obter máis información da manipulación directa.