Guide line segments are only a single short guide line.
They are not continuous polylines.
The PDF says to "
Hover the Cursor over the upper-right corner until a blue circle appears, and move the cursor
to the left."
You don't want to actually click there as that will start placing the guide segment.
Just hover for about a second until the blue circle appears. Then move to the left and type 200. Then move to the opposite side at a perpendicular angle an click to complete the guide segment.
Barry.
One of the forum moderators.
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