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This is CADian.

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1/ Command :

• EXX

2/ Description :
This tool allows you to extend or shorten the length of　selected lines by a specific value.

• Batch Operation: You can　select multiple lines at once using a crossing　selection (two points) to modify all their endpoints simultaneously.

• Positive/Negative Values: Entering a positive value extends the lines, while entering a negative value shortens them.

• Compatibility: This is a dedicated CADian Lisp tool and works only within CADian.

3/ How to Use :

1. Type exx in the command line and press Enter.

2. Click Two Points to create a crossing　selection window over the ends of the line(s) you want to modify.

3. Enter the Value to extend or shorten by and press Enter.

• Example: Enter 35 to extend the lines by 35 units.

• Example: Enter -30 to shorten the lines by 30 units.

4. The　selected lines are immediatelyd to the new length.