Section 13,48: PAUSE

 The PAUSE statement displays a message on the terminal and
 temporarily suspends program execution, so that you can take some
 action.  Statement format:

    PAUSE [disp]
  
    disp  Is an optional character constant or a string of 
          up to six digits.  (FORTRAN-77 limits digits to five.)

 If you do not specify a value for "disp", the system displays the
 following default message:

    FORTRAN PAUSE

 The system then displays the following prompt:

    PAUSE prompt>

 If you specify a value for "disp", this value is displayed instead
 of the default message.

 EFFECT OF PAUSE IN INTERACTIVE OR FOREGROUND MODE:

 In interactive or foreground mode, the program is suspended until
 you enter a command.

 To resume processing, enter CONTINUE, and execution will resume at
 the next executable statement.  Any other command terminates
 execution.

 EFFECT OF PAUSE IN BACKGROUND PROCESS MODE:

 In background mode, the effect differs depending on stdin (standard
 input), as follows:

  o  If stdin is redirected to a file, the system displays the
     following (after the message and prompt):

        To continue from background, execute 'kill -15 n'

     In this message, "n" is the process id of the program.

  o  If stdin is not redirected to a file, the program becomes a
     suspended background job, and you must specify fg to bring the
     job into the foreground.  You can then enter a command to
     resume or terminate processing.