On X11/Motif, if you want Emacs-style keys
Ctrl-n, Ctrl-p
in LispWorks list panels such as the Editor's buffers view, add the following to the X11 resources (see X11/Motif resources):
!
! Enable Ctrl-n, Ctrl-p in list panels
Lispworks*XmList.translations: #override\n\
Ctrl<Key>p : ListPrevItem()\n\
Ctrl<Key>n : ListNextItem()
!
LispWorks Release Notes and Installation Guide - 23 Dec 2011