hostapd(8): WDS == IAPP ?

[Damon McMahon]

Greetings,

In the context of hostapd(8) are IAPP and WDS synonymous? I need to  
extend my wireless network which uses an OpenBSD/i386 box with a ral 
(4) in HostAP mode and I'd like to do it with something much smaller  
and energy efficient such as an Airport Express or similar.

If the answer is no, are there any recommendations for how to do  
this? Any advice will be appreciated.

Thanks in advance,
Damon