Internal events are put into the event queue by Vermont Views. Their purpose is to control form, window, or choice list processing. For example, when the user leaves a data field, Vermont Views must redisplay the field in its inactive attribute. This is done by posting an internal event into the event queue, The internal event informs the form editor that the field must be redisplayed.
You can also put events into the internal event queue by posting them directly from your code. For more information about this, see Chapter 42, "Posting Events from Your Code."