* Some old struct preferences fields are now ignored by setprefs() (for
    example fontheight). setprefs() also stops listening to the pointer
    fields as soon as a new-style pointer is passed to Intuition
    (new-style pointers can be taller or deeper).

  * preferences viewx/yoffset only applies to the default mode. you
    cannot use these fields to move the position of all modes.

  * The preferences lacewb bit is not necessarily correct when workbench
    is in a new display mode (akin to getscreendata()).