To arrange the lines of the background
- Select one of the duplicate lines using the Pick tool
. (Make sure you select the center of the line, so that the property bar displays the properties for objects instead of the properties for the Artistic media tool.)
- In the Angle of rotation box
on the property bar, type -90 and press ENTER.
- Drag the rotated line into position so that it crosses the top of the original line.
- Select another of the duplicate lines by using the Pick tool.
- Type 90 in the Angle of rotation box on the property bar and press ENTER.
- Drag the rotated line into position so that it crosses the top of the original line.
- Select the last of the duplicate lines using the Pick tool.
- Click the Mirror horizontal button
on the property bar.
- Drag the mirrored line into position so that it completes the square.
This is what the drawing should look like:

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