{
{   The purpose of this request is to create an "input control block" in SCL's
{ command processing environment that represents input from an interactive
{ terminal.  This request is provided for applications that normally read
{ their own input (rather than have SCL read it for them) but that provide
{ some way for their users to enter "system commands".
{
{   This request should be made by an application at the point where it is
{ about to begin accepting input from an interactive terminal either in screen
{ or line mode.  When the application is finished accepting such input it
{ should make a corresponding clp$pop_interactive_input request.  In order to
{ process "system commands" received by it interactively, an application
{ should use the clp$include_command request.
{
{       CLP$PUSH_INTERACTIVE_INPUT (STATUS)
{
{ STATUS: (output) This parameter specifies the request status.
{       CONDITIONS: cle$unexpected_call_to
{
