Autodesk 00126-050008-1620A - Autocad 2006 Essentials User Manual page 172

The next prompt appears:
Point/Direction<Point>
2. Pick any point on the raster line.
Starting from this point, WiseImage traces the selected raster line in both
directions until in meets the two nearest intersections or breaks.
The program automatically determines the tracing direction. The rubber line is
stretched from the mouse cursor indicating the current tracing direction.
An example of starting the tracing procedure by picking one point (used by
default) is shown in the figure below.
Indicated point
Suppose that we need to trace in the opposite direction. To change the
direction, press the right mouse button and choose Direction. Then specify a
point on the raster line.
WiseImage traces a part of the indicated raster line between the first of the
indicated points and proceeds further, to the node nearest to the second
indicated point. Thus the second point determines the current direction of
tracing.
Below is an example of starting tracing by specifying a tracing direction
indicated (Direction option) is shown in the figure.
First and second points
Traced part of polyline
Traced part of polyline
12 Tracing
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