Add preamble.
diff --git a/include/freetype/freetype.h b/include/freetype/freetype.h
index be191f5..d02bbd2 100644
--- a/include/freetype/freetype.h
+++ b/include/freetype/freetype.h
@@ -33,6 +33,27 @@
/**************************************************************************
*
* @section:
+ * preamble
+ *
+ * @title:
+ * Preamble
+ *
+ * @abstract
+ * What FreeType is and isn't
+ *
+ * @descriptiom
+ * FreeType is a library that provides access to glyphs in font files.
+ * It scales the glyph images and their metrics to a requested size but
+ * it is not a text layout engine. FreeType rasterizes the glyph images
+ * and produces pixel or subpixel alpha coverage bitmaps but it does not
+ * perform alpha blending or compositing itself.
+ *
+ */
+
+
+ /**************************************************************************
+ *
+ * @section:
* header_inclusion
*
* @title:
diff --git a/include/freetype/ftchapters.h b/include/freetype/ftchapters.h
index 2ee2697..2a41fca 100644
--- a/include/freetype/ftchapters.h
+++ b/include/freetype/ftchapters.h
@@ -15,6 +15,7 @@
* General Remarks
*
* @sections:
+ * preamble
* header_inclusion
* user_allocation
*
