Stef,

	50 at 60 + 200 at 400

evaluates as if written

	(((50 at 60) + 200)@400)

So you get: 

50 at 60 ==> aPoint
aPoint + anInteger ==> anotherPoint.
anotherPoint @ anInteger ==> B3DVector3

Cheers,
Bob

>50 at 60 + 200 at 400
>
>I was thinking that as @ and + are both binary we evaluate the expression 
>from left to right
>and I was thinking that the result would be decomposed as follow
>
>sel @
>rec 50
>arg 60 + 200 at 400
>		
>		sel +
>		rec 60
>		arg 200 at 400  =>>>  260 at 400
>
>=>>> B3Vector but this is not
>
>I have the impression that somewhere there is something not uniform but I'
>m too tired to see it