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- *********************** DISPLAY LEVEL *******************
- A DRAWING IS MADE FROM MANY GROUPS. IN THE CONSTRUCTION AREA
- A NUMBER OF GEOMETRIC SHAPES ARE DRAWN AND THEN USING ONE OF
- THE FUNCTIONS OF "CREATE GROUPS (BLOCKS)" IS USED TO MAKE
- A GROUP FROM THE COLLECTION OF GEOMETRIC SHAPES. EACH GROUP
- IS ASSIGNED A LEVEL. LEVELS ARE SIMILAR IN FUNCTION TO THE
- OVERLAY DRAFTING (PIN-BAR SYSTEM).
- <end>
- THERE ARE 256 GROUPS AVAILABLE PER DRAWING. A GROUP IS ON A
- LEVEL. ALL COPIES OF THAT GROUP ARE ON THE SAME LEVEL.
- UPON CREATING A GROUP THE CURRENT LEVEL (ON THE STATUS LINE
- ABOVE) IS AUTOMAICALLY ASSIGNED TO THAT GROUP.
- TO BETTER ILLUSTRATE THIS CONCEPT, LET US DRAW A RECTANGLE
- AND A WALL THICKNESS CREATED WITH THE "OFFSET" FUNCTION.
- <end>
- THE WALLS HAVE BEEN TRANSFERRED TO LEVEL 1 AS INDICATED BY
- THE LEVEL BAR ABOVE. THE GROUP APPEARS DOTTED.
- <end>
- TO TRANSFER THE TABLE & CHAIR TO LEVEL 2 FIRST CHANGE THE
- LEVEL BY SELECTING THE LEVEL BAR & ENTERING "2".
- <end>
- UPON TRANSFER OF THIS COLLECTION OF VECTORS THEY ARE MADE
- INTO A GROUP & PLACED ON LEVEL 2.
- IMPORTANT: ANY COPIES MADE OF THESE GROUPS WILL ALSO BE
- ON LEVEL 2.
- <end>
- TO TRANSFER THE DESK LAMP TO LEVEL 3 FIRST SET THE CURRENT
- LEVEL TO 3.
- <end>
- NOW GROUP IT WITH A COMPLETELY CONTAINED WINDOW.
- <end>
- PRESS "5" TO GO TO THE GROUPS AREA. NOTICE THE GROUPS
- APPEAR SOLID WHEN WE ARE IN THE GROUPS AREA.
- TO GO TO THE GROUPS AREA PRESS "5".
- <end>
- WE ARE NOW IN THE GROUPS AREA.
- PRESS "1" FOR THE MAIN MENU.
- SELECT "DISPLAY LEVELS" FROM THE MAIN MENU TO DISPLAY THE
- MATRIX OF LEVELS.
- <end>
- IN THIS MATRIX, LEVELS 1,2 & 3 CONTAIN AT LEAST ONE GROUP.
- THEREFORE THEIR NUMBERS ARE DISPLAYED A IN DIFFERENT COLOR.
- EACH LEVEL HAS A GREEN AND A RED COMPONENT. THE GREEN & RED
- COMPONENTS OF EACH LEVEL CAN BE TURNED ON & OFF. TO TURN
- ON/OFF A LEVEL CLICK ON THE GREEN COMPONET & TURN ON/OFF
- THE EDITABILITY OF A LEVEL CLICK ON THE RED COMPONENT.
- <end>
- TO PROPERLY TURN OFF A LEVEL, CLICK ON BOTH THE GREEN & THE
- RED COMPONENTS OF THAT LEVEL THUS REMOVING THAT LEVEL BOTH
- FROM DISPLAY AND MAKING THAT LEVEL UNAVAILABLE TO THE EDIT
- FUNCTION.
- AT THIS TIME LET US MAKE SOME COPIES OF THE FURNITURE BELOW.
- <end>
- TURN OFF LEVEL 3 TO DISABLE BOTH THE DISPLAY & THE EDIT
- OF THE DESK LAMP.
- <end>
- IMPORTANT: THE CURRENT LEVEL CANNOT BE TURNED OFF.
- TO TURN OFF THE CURRENT LEVEL, FIRST MAKE ANOTHER
- LEVEL CURRENT.
-
- TO TURN OFF LEVEL 3, SET THE CURRENT LEVEL TO 1.
- <end>
- NOW LEVEL 3 CAN BE TURNED OFF.
- <end>
- LET US LEAVE ALL OTHER LEVELS ON.
- <end>
- LEVEL 3 (THE DESK LAMP) IS TURNED OFF. NOW MAKE A COPY OF
- THE DESK LAMP AND SEE THE RUSULT.
- <end>
- TURN ON LEVEL 3 & NOTICE THE RESULTS.
- <end>
- ********************** END OF LESSON *******************
- <end>