#------------------------------------------------------------------------------# autocad:  file(1) magic for cad files## AutoCAD DWG versions R13/R14 (www.autodesk.com)# Written December 01, 2003 by Lester Hightower# Based on the DWG File Format Specifications at http://www.opendwg.org/0	string	       \101\103\061\060\061		   AutoCAD>5	string	       \062\000\000\000\000		   DWG ver. R13>5	string	       \064\000\000\000\000		   DWG ver. R14# Microstation DGN/CIT Files (www.bentley.com)# Last updated July 29, 2005 by Lester Hightower# DGN is the default file extension of Microstation/Intergraph CAD files.# CIT is the proprietary raster format (similar to TIFF) used to attach# raster underlays to Microstation DGN (vector) drawings.# # http://www.wotsit.org/search.asp# http://filext.com/detaillist.php?extdetail=DGN# http://filext.com/detaillist.php?extdetail=CIT## http://www.bentley.com/products/default.cfm?objectid=97F351F5-9C35-4E5E-89C2# 3F86C928&method=display&p_objectid=97F351F5-9C35-4E5E-89C280A93F86C928# http://www.bentley.com/products/default.cfm?objectid=A5C2FD43-3AC9-4C71-B682# 721C479F&method=display&p_objectid=A5C2FD43-3AC9-4C71-B682C7BE721C479F0	string	\010\011\376			Microstation>3	string	\002>>30	string	\026\105			DGNFile>>30	string	\034\105			DGNFile>>30	string	\073\107			DGNFile>>30	string	\073\110			DGNFile>>30	string	\106\107			DGNFile>>30	string	\110\103			DGNFile>>30	string	\120\104			DGNFile>>30	string	\172\104			DGNFile>>30	string	\172\105			DGNFile>>30	string	\172\106			DGNFile>>30	string	\234\106			DGNFile>>30	string	\273\105			DGNFile>>30	string	\306\106			DGNFile>>30	string	\310\104			DGNFile>>30	string	\341\104			DGNFile>>30	string	\372\103			DGNFile>>30	string	\372\104			DGNFile>>30	string	\372\106			DGNFile>>30	string	\376\103			DGNFile>4	string	\030\000\000			CITFile>4	string	\030\000\003			CITFile# AutoCad, from Nahuel Greco# AutoCAD DWG versions R12/R13/R14 (www.autodesk.com)0	string AC1012	AutoCad (release 12)0	string AC1013	AutoCad (release 13)0	string AC1014	AutoCad (release 14)# CAD: file(1) magic for computer aided design files# Phillip Griffith <phillip dot griffith at gmail dot com># AutoCAD magic taken from the Open Design Alliance's OpenDWG specifications.#0	belong	0x08051700	Bentley/Intergraph MicroStation DGN cell library0	belong	0x0809fe02	Bentley/Intergraph MicroStation DGN vector CAD0	belong	0xc809fe02	Bentley/Intergraph MicroStation DGN vector CAD0	beshort	0x0809		Bentley/Intergraph MicroStation>0x02	byte	0xfe>>0x04	beshort	0x1800		CIT raster CAD0	string	AC1012		AutoDesk AutoCAD R130	string	AC1014		AutoDesk AutoCAD R14 0	string	AC1015		AutoDesk AutoCAD R2000