{
{    The purpose of this procedure is to store into the volume set table
{ indication that the device file is going to be modified.
{
{       STP$STORE_VST_BEING_MODIFIED (P_VST, STATUS)
{
{ P_VST: (input)  This parameter specifies the volume set table that will be
{       modifed.
{
{ STATUS: (output) This parameter returns the request status.
{
