Basing Pointer Questions

I've been able to use basing pointers with MODS and Arrays quite effectively
in some of my programs, but quickly start running into problems whenever I
try to modularize the code with subprocedures or service program procedures.
Some questions that have come up with regard to how I can use basing
pointers:

1.)  If I allocate 100 bytes to MyBasingPointer and then I do an EVAL
AnotherBasingPointer    = MyBasingPointer, does AnotherBasingPointer also
have 100 bytes allocated to it?  If not, does it have any memory allocated
to it yet?

2.) If AnotherBasingPointer is pointing to the same address as
MyBasingPointer, and I reallocate 1000 bytes to AnotherBasingPointer, have I
also reallocated the memory assigned to MyBasingPointer?

3.)  If I have a basing pointer defined globally in a module, can I
reallocate memory to it in a subprocedure?  Will the new amount of memory
still be there when the subprocedure ends?

4.)  If I define a basing pointer in a subprocedure as static and allocate
memory to it, can I use it and reallocate memory to it in the main procedure
or another subprocedure?

5.)  Is there anyway to work with the allocated memory of a basing pointer
in a given program from a called service program procedure?  Such as
MyBasingPointer = AddMoreMemory(MyBasingPointer:MemoryToAdd)

6.)  Where is the information regarding how much memory has been allocated
to a pointer stored?  Is there an API to get at it?  Maybe if I knew this, I
would be able to determine the answers to the other questions above.

Thanks for your help.




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