{
{  The purpose of this request is to read a character string from the
{        specified file.
{
{
{        CYP$GET_PARTIAL_LINE (FILE, PARTIAL_LINE, NUMBER_OF_CHARACTERS_READ,
{              LAST_PART_OF_LINE, STATUS)
{
{
{  FILE: (input) This parameter specifies the file to be read.
{
{  PARTIAL_LINE: (output) This parameter specifies the CYBIL string into
{        which the character string is read.
{
{  NUMBER_OF_CHARACTERS_READ: (output) This parameter returns the number of
{        characters transferred into partial_line.
{
{  LAST_PART_OF_LINE: (output) This parameter returns a TRUE value if the end
{        of the line was encountered, otherwise a value of FALSE is returned.
{
{  STATUS: (output) This parameter specifies the request status.
{        CONDITIONS:
{              cye$file_not_open
{              cye$illegal_input_request
{              cye$illegal_operation
{
