KUIML offers specific concepts during loading/building phase (see Build Phases), such as TEMPLATE or VARIABLE which are not available anymore at runtime, when the application has been built and is running.

These concepts will be referred to as "built-time" later in the manual, as opposed to the runtime model that describes the objects and concepts available to the application while running.

All Language Elements are all "built-time", whereas Model Elements and User Interface Elements are "run-time".