$FUNCNAME$
  OS()
$CATEGORY$
  SYSTEM,ENVIRONMENT,INFO
$SUMMARY$
   Return the operating system name
$LANG_RU$
      .
$SYNTAX$
     OS() --> cOsName
$LANG_RU$
     OS() -->   
$RETURNS$
     OS() returns the operating system name as a character string.
$LANG_RU$
     OS()        .
$DESCRIPTION$
     OS() is an environment function that returns the name of the disk
     operating system under which the current workstation is operating.  The
     name is returned in the form of the operating system name followed by
     the version number.
$LANG_RU$
     OS() -  ,     
     ,      . ,
        OS(),    : 
         .
$EXAMPLES$
       This example uses OS() to report the operating system under
	which the current workstation is running:

	? OS()                  // Result: LINUX
$LANG_RU$
          OS()    .

       ? OS()                 // : LINUX
$SEEALSO$
  VERSION(),GETENV()
$END$
