Straightening and smoothing lines
You can reshape lines and shape outlines by straightening or
smoothing them.
Note: Adjust the degree of automatic
smoothing and straightening by choosing File > Assistant.
Use the Straighten modifier of the arrow tool or choose Modify
> Curves > Straighten to make small straightening
adjustments to lines and curves you have already drawn.
Straightening has no effect on already straight segments.
You can also use the straightening technique to make Flash
recognize shapes. Flash makes geometrically perfect any circles,
ovals, rectangles, squares, triangles, and arcs you drew with
shape recognition options turned off. Shapes that are touching,
and thus connected to other elements, are not recognized.

Shape recognition turns the top shapes
into the bottom shapes.
Smoothing softens curves and reduces bumps or other variations
in a curve's overall direction. Smoothing also reduces the number
of segments in a curve. Smoothing is relative, however, and has no
effect on straight segments. Smoothing is particularly useful when
you are having trouble reshaping a number of very short line
segments. Selecting all the segments and smoothing them reduces
the number of segments, producing a gentler curve that is easier
to reshape.
Repeated application of smoothing or straightening makes each
segment smoother or straighter, depending on how curved or
straight each segment was originally.
To smooth the curve of each selected fill outline or curved
line:
Select the arrow tool and click the Smooth modifier, or choose
Modify > Curves > Smooth.

To make small straightening adjustments on each selected
fill outline or curved line:
Select the arrow tool and click the Straighten modifier, or
choose Modify > Curves > Straighten.

To use shape recognition:
Select the arrow tool and click the Straighten modifier, or
choose Modify > Curves > Straighten.
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