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Signed-off-by: Mattias Andrée <maandree@kth.se>

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+.TH LIBRIFUNKTIONSTECKENSNITTSGLYFRASTERISERINGSPROGRAMBIBLIOTEKET 7 LIBRIFUNKTIONSTECKENSNITTSGLYFRASTERISERINGSPROGRAMBIBLIOTEKET
+.SH NAME
+librifunktionsteckensnittsglyfrasteriseringsprogrambiblioteket - Font rasterisation library
+
+.SH DESCRIPTION
+.B librifunktionsteckensnittsglyfrasteriseringsprogrambiblioteket
+is a C library for converting shape outlines to filled shapes,
+with a focus on fonts, which that it only supports filled,
+closed shapes and that the direction of the outline determines
+whether a shape adds or subtracts to the image (the absolute
+values of the result is used in the image). Furthermore this
+means that the library only supports curve types that are used
+for drawing glyphs; specifically this means that lines and
+quadratic Bézier curves are supported by cause this is what is
+required to draw vectorised bitmap fonts and TrueType fonts,
+but also cubic Bézier curves as this is required for OpenType
+fonts and elliptical arcs (elliptical rather than circular
+because it may be need required to strech the circle to support
+outputs with different vertical and horizontal dot density and
+to support subpixel antialiasing) as this is commonly used for
+corners when stroking the outline of a glyph.
+.PP
+The create an image, first create a buffer using
+.BR rtgrpblib_create_raster (3)
+(if you already have one that is large enough, you can
+reinitialise it with
+.BR rtgrpblib_reset_raster (3)),
+and than using the drawing functions
+.RB ( rtgrpblib_draw_linear_bezier (3),
+.BR rtgrpblib_draw_quadratic_bezier (3),
+.BR rtgrpblib_draw_cubic_bezier (3),
+and
+.BR rtgrpblib_draw_elliptical_arc (3))
+to draw the components of each shape's outline. When done,
+create an image using the
+.BR rtgrpblib_fill_shapes (3)
+function: you will receive a ink-level map, where the value
+0 means background, and 1 means foreground, and values between
+are colours between (no transfer function is applied).
+
+.SH NOTES
+Rifunktionsteckensnittsglyfrasteriseringsprogrambiblioteket (hyphenation:
+ri|funk¦tions-tec¦ken|snit¦ts-glyf-ras¦ter¦iser¦ings-prog¦ram|bib¦lio¦te¦ket)
+is Swedish for \(dqthe library for rasterising glyphs from spline fonts\(dq.
+.PP
+Because of the length of the library name, and length limitation
+on function names, the functions in this library are namespaced
+with the prefix \(dqrtgrpblib_\(dq.