{
{   This request converts an "old" PDT (clt$paramter_descriptor_table) to a
{ "new" PDT (clt$parameter_description_table).
{
{       CLP$CONVERT_PDT (OLD_PDT, WORK_AREA, NEW_PDT, STATUS)
{
{ OLD_PDT: (input)  This parameter specifies the PDT to be converted.
{
{ WORK_AREA: (input, output)  This parameter specifies an area of storage that
{       will be used to construct the new PDT.  The current position of this
{       sequence pointer is updated to reflect the amount of storage used by
{       the request.
{
{ NEW_PDT: (output)  This parameter specifies the converted PDT.
{
{ STATUS: (output) This parameter specifies the request status.
{
