muimaster.library contains functions for creating and diposing
objects, for requester handling and for controlling custom
classes. Additionally, several of the standard MUI classes are
built into muimaster.library. For you as a programmer, there
is no difference between using a builtin class or an external
class coming as ''sys:classes/<foobar>.mui''. The MUI object
generation call takes care of this situation and loads
external classes automatically when they are needed.