Moving data into dynamic storage

[Rich Duzenbury <rduz@xxxxxxxxxxxxxxxxxxx>]

Hello,

I've ALLOC'd some variable amount of storage, and now I want to move some
data into it.  I currently use the following idiom to base a character
variable onto a pointer:

D pentry          s               *
D entry           s            100    based(pentry)

Now, I can MOVEL some data into entry (up to 100 bytes), and it goes where
the pointer is pointing to quite nicely.

My problem is that since the amount of storage is variable, I don't want to
have to declare a fixed length for the 'entry' variable.

How can I copy data into the contents of pentry while avoiding a fixed
length restriction?

Regards,
Rich