{
{   The purpose  of  this request is to store the permanent file root into the
{ master volume set table.  There is no validation done in this request.  This
{ request  will  attach  the  volume  set table as specified by the master vsn
{ parameter and store the pf root into the volume set table.  If a pf root had
{ previously been stored the old pf root will be discarded.
{
{       STP$STORE_VST_PF_ROOT (MASTER_VSN, PF_ROOT, STATUS)
{
{ MASTER_VSN:  (input) This parameter specifies the name of the master vsn for
{       the set that the pf root is being stored.  This is assumed correct.
{
{ PF_ROOT: (input) This specifies the permanent file root to be stored.   This
{       is assumed to be an adaptable sequence.
{
{ STATUS: (output) This parameter returns the request status.
{
{       CONDITIONS: ste$no_space_vst_heap
{                   ste$attach_df_error
{                   ste$open_error
{                   ste$vol_not_in_set
{
{       IDENTIFIER: stc$set_management_id
{
