Adobe ILLUSTRATOR 6.0, Online Manual, Page: 728 / 893

728
You can create both spread and choke in
the Adobe Illustrator program.
It is generally best to scale your graphic
to its final size before adding a trap.
Once you create a trap for an object, the
amount of trapping will increase or
decrease if you scale the object. For
example, if you create a graphic that has
a 0.5-point trap and scale it to five times
its original size, the result will be a
2.5-point trap for the enlarged graphic.