The Object Browser, or "Behavioral Inspector", is describded in 
details in this article (with screenshots): 

http://www.macdevcenter.com/pub/a/mac/2001/12/21/browsing_cocoa.html

Phil

On lundi, septembre 2, 2002, at 11:33  PM, Michael Roberts wrote:
> Hi,
>
> this looks interesting.  Does it only support unary style messages or is
> there a way to pass in objects as parameters to (say) keyword
> messages.
>
> (sorry if I missed this)
>
> cheers
>
> Mike
>
>
> On Sat, Aug 31, 2002 at 08:54:33PM +0200, Stephane Ducasse wrote:
>> Hi,
>>
>> At ESUG, we got a presentation of F-script (a scripting and Smalltalk
>> language with APL like vector manipulations). Philippe the F-Script=20=

>> father
>> implemented a ***really*** interesting inspector called object =
inspector.
>>
>> The idea is that this behavioral inspector does not show the instance =
of
>> object, but offers all the methods, when we click on a method it get
>> executed on this object and the result is put on the right. When=20
>> selecting
>> this new object the method it understand are again displayed on his=20=

>> right.
>> ....