diff --git a/cucul/Makefile.am b/cucul/Makefile.am
index 5979d88..31434e6 100644
--- a/cucul/Makefile.am
+++ b/cucul/Makefile.am
@@ -25,6 +25,7 @@ libcucul_la_SOURCES = \
 	triangle.c \
 	sprite.c \
 	dither.c \
+	font.c \
 	export_irc.c \
 	export_ansi.c \
 	export_html.c \
diff --git a/cucul/font.c b/cucul/font.c
new file mode 100644
index 0000000..6fdf6df
--- /dev/null
+++ b/cucul/font.c
@@ -0,0 +1,60 @@
+/*
+ *  libcucul      Canvas for ultrafast compositing of Unicode letters
+ *  Copyright (c) 2002-2006 Sam Hocevar <sam@zoy.org>
+ *                All Rights Reserved
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the Do What The Fuck You Want To
+ *  Public License, Version 2, as published by Sam Hocevar. See
+ *  http://sam.zoy.org/wtfpl/COPYING for more details.
+ */
+
+/** \file font.c
+ *  \version \$Id$
+ *  \author Sam Hocevar <sam@zoy.org>
+ *  \brief Colour handling
+ *
+ *  This file contains font handling functions.
+ */
+
+/*
+ * The libcaca font format
+ * -----------------------
+ *
+ * All types are big endian.
+ *
+ * struct
+ * {
+ *    uint8_t caca_header[4];    // "CACA"
+ *    uint8_t caca_file_type[4]; // "FONT"
+ *
+ * header:
+ *    uint32_t header_size;      // size of the header (data - header)
+ *    uint16_t version;          // font format version (= 1)
+ *
+ *    uint16_t glyphs;           // total number of glyphs in the font
+ *    uint16_t width;            // glyph width
+ *    uint16_t height;           // glyph height
+ *    uint16_t bytes;            // bytes used to code each character,
+ *                               // rounded up to a multiple of 2.
+ *
+ *    uint16_t blocks;           // number of blocks in the font
+ *
+ *    struct
+ *    {
+ *        uint32_t start;        // Unicode index of the first character
+ *        uint32_t end;          // Unicode index of the last character + 1
+ *        uint32_t offset;       // Offset (starting from data) to the data
+ *                               // for the first character
+ *    }
+ *    block_list[blocks];
+ *
+ * padding:
+ *    ...                        // reserved for future use
+ *
+ * data:
+ *    uint4_t[glyphs * bytes];   // glyph data
+ * };
+ *
+ */
+