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-rw-r--r--extras/source/truetype/symbol/README16
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+Modify the OpenSymbol.sfd and generate opens___.ttf from it with fontforge. The
+.sfd is the canonical source for the .ttf
+
+Every new version of the font should increase the font version. This is
+important so that when two versions of the font are installed, e.g. one
+bundled inside the office installation, and one already installed on the system
+that the most recent font can be detected and favoured.
+
+Bumping the font version is easiest done manually by bumping the two places in
+the .sfd where the version is mentioned, e.g.
+
+-Version: 102.2
++Version: 102.3
+
+-LangName: 1033 "" "" "Regular" "OpenSymbol" "" "Version 102.2"
++LangName: 1033 "" "" "Regular" "OpenSymbol" "" "Version 102.3"