A user-interface of a device renders a first object and a second object,
each object with data of a business application. The device is either of
a first type or of a second type. In the device, an interpreter receives
an application specification document with a statement. The statement
indicates to render the first and second objects in an assembly. The
interpreter identifies a presentation pattern for the assembly from
predefined first and second presentation patterns according to the type
of the device so that the assembly is rendered according to the
presentation pattern.