CUSTOM PATTERN MAKER - Chapter VIII - pg 81
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      18.6.  EXPLODE the pattern piece and PEDIT J(OIN) the lines that form the seam lines of the facing.  Use W(INDOW) to SELECT the neck or arm curves because they are now a lot of tiny lines.

19.  USE OFFSET TO CREATE BASIC FACING LINES.

    To create FACINGS use OFFSET under EDIT on the SEW MENU to create the outside edges of the facings.  Select OFFSET.  The computer will ask:
    Offset distance or Through <Through>:

19.1.  Type the width of the facing (example: 2-1/2, 2.5, 3 etc.) and ENTER.  The computer will now ask:
          Select object to offset:

19.2.  Use the "pick box" cursor to select any spot on the seam line of the facing.  The computer will now ask:
         Side to offset?

19.3.  Use the CROSS-HAIRS to point anywhere on the inside of the pattern piece.  The computer will seem to do nothing for a while.  It has to calculate all the points and lines that make up the entire pattern piece.  Curves are made up of many short dash lines.  The more curves in a pattern, the longer the calculation will take.  Eventually you will see the seam allowance quickly form around the pattern piece.  The computer will then repeat:
         Select object to offset:
You can repeat the procedure for all the pattern pieces and facing areas in sequence.  To end the command sequence click ENTER.


20.  USE EXTEND TO MAKE CURVED OFFSET FACING LINES MEET AND JOIN SEAM LINES.

    If the new OFFSET edges of the facings that are paralleling a curve don't go all the way to the end seam lines, (they will only directly parallel the other curve) use the command EXTEND to get them to meet  the end seam lines.  SELECT EXTEND from the EDIT MENU.   The computer will say:
Select boundary edge(s):

20.1.  Use the cursor "pick box" to SELECT the "end" seam allowances of the facing and click ENTER to end SELECTing.  The computer will say:
        Select line to be extended:

20.2.  Use the cursor "pick box" to SELECT the OFFSET line on the end closest to the "end" seam line.  You will see the line "jump" into place, closing the gap.  It will EXTEND in the direction of the OFFSET line.  (If the line is curving, it will continue the curve.)

21.  REMOVE LEFT OVER PATTERN LINES FROM THE FACING WITH TRIM AND ERASE