{
{
{         This request creates and initializes subbuffer descriptors
{      for a sysytem buffer descriptor.  The number of subbuffers
{      created is based on a base subbuffer size and the system buffer
{      size.
{
{ BAP$CREATE_SUB_DESCRIPTORS(sbd_ptr)
{
{      SBD_PTR : (input) this parameter specifies a pointer to a system
{                 buffer descriptor.
{
