Admin/isabelle_fonts/IsabelleSymbolsBold.sfd
Sun, 09 Dec 2018 18:11:56 +0100 wenzelm more mathematical glyphs from Isabelle2009-1/lib/fonts/IsabelleMono.sfd (still unused);
Sun, 09 Dec 2018 16:33:45 +0100 wenzelm clarified names;
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