1911 AutoCAD Hatch Pattern Image (Raster) A hatch pattern consists of a repeating pattern of lines, dashes, and dots, and is used within AutoCAD to represent materials to be used within the manufacture of the object defined in the CAD drawing 1 Digital Preservation Department / The National Archives 27 Sep 2017 27 Sep 2017 fmt/1103 PUID pat File extension 1485 AutoCAD Hatch Pattern Top line: asterisk, then a filename (up to 31 characters) that will start with a minimum of one letter or number, followed by an optional description then a line-ending. Second line: A minimum of 5 numeric (integer or floating point) values, representing Angle, X-origin, Y-origin, Delta-x, Delta-y (further values may represent optional dashes). Origins and Deltas may be negative or positive. A comma will follow each numeric value and each line will be terminated with a line ending. 1 Absolute from BOF 0 0 2A([30:39]|[41:5A]|[61:7A]){0-80}0D0A{0-10}[30:39]2C20{0-10}[30:39]2C([30:39]|2D[30:39]|2E[30:39]){0-10}2C20{0-10}[30:39]2C([30:39]|2D[30:39]|2E[30:39]){0-128}0D0A