aList->update (ul_oocbs)

	update(aList.s.r, tag.i4.v)

	This method is used to destructively overwrite the original contents
	of the element with the matching tag.

	aList              a pointer to the aList (structure of type aList)
	tag               the tag to be used to update the corresponding
	                  aList element

	This function returns:

	nothing

	Use of this class requires the following header files:

	aList.h

	Related functions:

	create_aList()     the constructor for instances of the aList class

	C/C++ usage:

	#include "aList.h"
	aList	*aList;
	int	item;
	int	tag;

	(*aList->update)(aList,(void *) &item,tag);