variable/ST                                                       variable/ST
 
 NAME
     ST -- Input/output status
 
 DESCRIPTION
     ST is a status variable for input and output (exept normal 
     screen/keyboard operations). The value of ST depends on the results of 
     the last input/output operation.
 
 EXAMPLES
     None
 
 NOTES
     None
 
 SEE ALSO
     None