{
{   This function returns a count of the number of elements in an SCL list
{ value.  If the list is empty, zero is returned.  If the value passed to
{ this function is not a properly formed list the results are undefined.
{
{       CLP$COUNT_LIST_ELEMENTS (LIST_VALUE):  COUNT
{
{ LIST_VALUE: (input)  This parameter specifies the list value whose elements
{       are to be counted.
{
