{
{   The purpose of this request is write modified pages to
{ disk.  All pages which are all or partially contained within
{ the portion of the segment specified and which have been
{ modified are written to disk.
{
{       MMP$WRITE_MODIFIED_PAGES (PVA, LENGTH, WAIT, STATUS)
{
{ PVA: (input) This parameter specifies the start of the
{       range of memory to be updated on disk.
{
{ LENGTH: (input) This parameter specifies the number of bytes
{       to be updated on disk.
{
{ WAIT: (input) This parameter specifies whether the task
{       should wait until all write operations for the specified
{       addresses have completed.
{
{ STATUS: (output) This parameter specifies the request status.
{       The possible error codes are:
{             dfe$server_has_terminated
{             mme$io_write_error
{             mme$segment_not_assigned_device
{             mme$segment_not_pageable
{             mme$volume_unavailable
{

