TOPDISPLAY

THE .. SHORTHAND

 / 

|

-

-

-

-

-

-

-

-

-

-

-

-

-

-

/

/

bin/

|

|

|

etc/

etc/

\

\

usr/

 /

 /

 /

lib/

\

\

\

spool/

usr/

lib/

spool/

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

\

\

usr2/

-

-

-

-

-

-

-

 /

 /

ann

|

|

dan

-------

\

\

tom

---

This is ann's home directory.

---

BLINK1

ann

ann 

---

The command cd  .. will change to ann's parent directory: usr2/.

---

ann

BLINK2

usr2/

usr2/

---

The command cd  ../.. will change to the directory above                           

ann's parent directory:  / .

---

usr2/

BLINK3

 / 

 / 

 <<<<<<<<<<<<<CLEAR PROMPT LINE ONLY>>>>>>>>>>>>>>>>>>>

PRLCLEAN

 ------------ UNIVERSAL INTERACTION ROUTINE ----------------------

INTERACT

 $CMD_PR1$

 $CMD_PR2$

 $CMD_PR3$

 $CMD_PR4$

 $CMD_PR5$

 $CMD_PR6$

$PROMPT$

 U: LCLEAN

 That is correct!

 You've got it on the 2nd try.

 Good, you understand the concept.

$FIRST_F1$

$FIRST_F2$

$FIRST_F3$

$SECOND_F1$

 $SECOND_F2$

$SECOND_F3$

 I will help you this time.        

$PROMPT$

FORGET1

$PROMPT$$ANSWER$

 Observe the result on the terminal.

 and in the diagram above.

 -----END INTERACTION ROUTINE--------------------------

**********FOOTER TO REQUEST CONTINUATION**********

PAUSE

If they want to quit, do so

   <<<<< LEFT_CLEAN SUBROUTINE >>>>>>>>>>>>>>>>>>>>>

LNEXT

 Below is a subroutine to paint over the contents of our terminal

 screen and put a prompt in the appropriate place.

ENCORE2

$PROMPT$ 

 This is the routine that draws the terminal

DRAWTERM

                 TERMINAL                

NEXT

 $V1$

 <<<<<<<<<<<<CLEAN INSIDE UPPER BOX ONLY>>>>>>>>>>>>>>>

ENCORE1

 <<<<<<<<<<<<<CLEAR BOTTOM AREA ONLY>>>>>>>>>>>>>>>>>>>

BOTCLEAN

 <<<<<<< Standout Line Procedure >>>>>>>>>>

LINE

AANVANG

  / 

ann

tom

 ------------ cd .. INTERACTION ---------------------

             X-------- Obey this limit ---------X

             X-------- Obey this limit ---------X

Moving up one level in the file system tree practice, - 1.4.2.0.3

 $PROMPT$$ANSWER$

 $PROMPT$

tom

usr2/

 ------------ cd tom INTERACTION ---------------------

             X-------- Obey this limit ---------X

             X-------- Obey this limit ---------X

 $PROMPT$$ANSWER$

 $PROMPT$

usr2/

tom

 ------------ cd ../.. INTERACTION ---------------------

             X-------- Obey this limit ---------X

             X-------- Obey this limit ---------X

 $PROMPT$$ANSWER$

 $PROMPT$

usr2

tom

  /