ment's size here */

</PRE>
<P>
This routine translates the index of an element into the element's
address. The routine is passed an optr to the chunk array, the
index of the element in question, and a pointer to a word-sized
variable. It returns a pointer to the element. If the elements
in the array are of variable size, it writes the size of the element
to the variable pointed to by the <EM>elementSize</EM> pointer.
If the elements are of uniform size, it does not do this.</P>
<P>
If the array index is ou