Dolphin:
#becomeAn:

VisualAge:
#fixClassTo: , #changeToClass:

VisualWorks:
#changeClassTo:, #changeClassToThatOf:

But every Smalltalk has its own particularities and specific conditions.

2009/5/16 Sophie <itsme213 at hotmail.com>:
> On 2009-05-12 18:31:34 -0500, Hernán Morales Durand
> <hernan.morales at gmail.com> said:
>
>> #primitiveChangeClassTo:
>>
>> You can see a working example in the Instances Browser :
>> http://www.squeaksource.com/LightweightClasses.html
>
> Is this portable across Smalltalks, or Squeak-specific?
>
>
>
>
>