Hatch patterns for parquet, orthogonal, braided, hollow etc ...
In order to use them, you must copy and paste the files into the autocad "support" subfolder. The location of the folder has a path like:
C: \ Documents and Settings \ pc name \ Application data \ Autodesk \ AutoCAD 2005 (or other versions) \ R16.1 (17.1) \ ita \ Support
Done this with the "hatch" command you will find the various types of hatches in the "hatch patterns palette" in the "custom" window
For those unfamiliar with the procedure for inserting .pat files, you can follow the instructions on our page
"How to import hatch patterns into AutoCAD"