Hatching fills a specified area in a drawing with a pattern.
When creating a hatch, you do not initially specify the area to be filled. First you must create the Hatch object. Once this is done, you can specify the outer loop, which is the outermost boundary for the hatch. You can then continue to specify any inner loops that may exist in the hatch.
For more information about working with hatches, see “Overview of Hatch Patterns and Fills” in the User's Guide.