configuring pdksh's completion list

[LeVA]

Hi!

I have pdksh version 'PD KSH v5.2.14 99/07/13.2' on an OpenBSD and a 
Debian machine. Both have exactly the same version numbers and settings 
(config files, set -o etc...). However, when the shell tries to 
complete a filename or an executable name on the Debian machine it goes 
like this:
 1) cd
 2) /usr/bin/cd-discid
 3) /usr/bin/cdadd
 4) /usr/bin/cdclose
 5) /usr/bin/cdctrl
[...]

and on the OpenBSD machine:
cd             /usr/bin/cdio

How can I configure the latter to act like the former (display the list 
vertically with numbers)?

Thanks!

Daniel

-- 
LeVA