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+
+#------------------------------------------------------------------------------
+# $File: msdos,v 1.105 2016/03/03 18:58:14 christos Exp $
+# msdos: file(1) magic for MS-DOS files
+#
+
+# Windows icons
+# Update: Joerg Jenderek
+# URL: https://en.wikipedia.org/wiki/CUR_(file_format)
+# Note: similiar to Windows CURsor. container for BMP (only DIB part) or PNG
+0 belong 0x00000100
+>9 byte 0
+>>0 byte x
+>>0 use cur-ico-dir
+>9 ubyte 0xff
+>>0 byte x
+>>0 use cur-ico-dir
+# displays number of icons and information for icon or cursor
+0 name cur-ico-dir
+# skip some Lotus 1-2-3 worksheets, CYCLE.PIC and keep Windows cursors with
+# 1st data offset = dir header size + n * dir entry size = 6 + n * 10h = ?6h
+>18 ulelong &0x00000006
+# skip remaining worksheets, because valid only for DIB image (40) or PNG image (\x89PNG)
+>>(18.l) ulelong x MS Windows
+>>>0 ubelong 0x00000100 icon resource
+#!:mime image/vnd.microsoft.icon
+!:mime image/x-icon
+!:ext ico
+