Chaim,

I'm pretty sure there is a fox.wikis.com article that shows the relative "weights" of each VFP baseclass. And unless you are instantiating thousands of objects at the same time it's a fairly irrelevant choice. If you need data session encapsulation use either Session or Form. If you want to use the class designer I recommend Container because you can build composite classes at design time where it's appropriate. If you are just using prg based classes it doesn't much matter, pick one for your lowest level class and derive everything else from it.

>I have to define a class in code. What is the most lightweight VFP base class to specify as the parent class? We used to use Line--is there a better option now?
>
>EXAMPLE:
>DEFINE CLASS MyClass AS Line
>... (more stuff here)
>ENDDEFINE