you wrote >I know of some programs for example that have a fixed
data area.. ( another reason to put data in one place maybe ) and to
swap languages a block of memory is swapped in.>

That sounds like something I need to know more about . . . data
management is the name of the game at one level or another. Please
help me understand this more or head me in the right direction to
research it. Of course, the group would benefit most, since I'm sure
I'm not the only one who that would be relevant to--so I'll look for
your response. However, that might be a good topic for a new
thread. Thanks for your help, and I'll look forward to learning more.