Minor changes on Section 9.3

For better readability:

• From "...a distinction is made between the external behavior of application components in terms of application services, and the internal behavior of these components; e.g., application functions that realize these services." to "...a distinction is made between the external behavior of application internal active structure elements in terms of application services, and the internal behavior of these elements; e.g., application functions and application processes that realize these services."
• Move Figure 75 upwards, just after the first paragraph
• From "...provided by one or more components, exposed through ..." to "...provided by one or more application internal active structure elements, exposed through...
• From "The service element provides..." to "The application service element ..."
• From "...provides through a user interface, is also modeled using an application service that is exposed..." to "...provides through an user interface is also modeled using an application service, which is exposed ..."
• From "Internal application services are exposed..." to "Application-level services are exposed ..."
• From "...describes the internal behavior of a component needed..." to "...describes the internal behavior of an application internal active structure element needed..."
• From "...the internal behavior of a component is not modeled..." to "...the internal behavior of an application internal active structure element is not modeled..."
• From "The description of such behavior may lead the architect to be confronted with detailed design issues." to "Such detailed description of application behavior may lead the architect to be confronted with system design issues."