4.1.1 The IBS should be capable of being operated
by personnel holding appropriate certificates.
4.1.2 The Man Machine Interface (MMI) should be
designed to be easily understood and in a consistent style for all
integrated functions.
4.1.3 Where multifunction displays are used, they
should be in colour, and continuously displayed information and functional
areas, e.g. menus should be presented in a consistent manner.
4.1.4 For actions which may cause unintended results,
the IBS should request confirmation from the operator.