{
{   The purpose of this request is to store the permanent file root for the
{ given set.  The permanent file root may of may not have been stored
{ previously.  If the root was stored previously the old root is discarded.
{
{       STP$STORE_PF_ROOT (SET_NAME, PF_ROOT, STATUS)
{
{ SET_NAME: (input) This parameter specifies the name of the set for which
{       the permanent file root is to be stored.
{
{ PF_ROOT: (input) This parameter specifies the permanent file root that is
{       to be stored by the set manager.
{       This is assumed to be an adaptable sequence.
{
{ STATUS: (output) This parameter returns the request status.
{
{        CONDITIONS: ste$set_not_active
{                    ste$master_not_active
{                    ste$space_unavailable_ast
{                    ste$no_space_vst_heap
{                    ste$not_allowing_access
{                    ose$job_pageable_full
{
{        IDENTIFIER: stc$set_management_id
{
