Creates hatch objects in non-enclosed areas along lines and polylines. Civil Engineers use it to highlight pavement edges and other features in site plans.
AHatch Pro is a flexible tool for the design of Autodesk AutoCAD hatch patterns. The generated hatch patterns can be used with the AutoCAD "hatch" and "bhatch" commands. AHatch Pro is developed as a stand-alone program and may be used independently of AutoCAD.
HACEXT is an AutoLISP program that capture a hatch pattern from an existing drawing. Sometimes you have a nice hatch in a drawing, you want to use them in other drawings, but you don't have the pattern file. The result of using HACEXT will be the 'pat' file.