TAB key behaviour

[olivier_roulet-dubonnet@ds-fr.com]

Hi,

I am used to the standart behaviour of the key TAB on Linux.
It proposes the possible files or commands and complete them
if only one solution is available.

 But I am now working on AIX
 system with ksh and the same fonction is not available.

I can get the possible completion of files ( and not commands)
  only if I use Esc and "=" and I can complete files ( only)
 by double clicking  the ESC key.

Does someone knows whitch program handle this behaviour ?
 and how I could set it like on Linux?

thank you,

Olivier