@@ -2,10 +2,20 @@

 [Glyph][] contour [winding number][] and [SDF][] OpenGL experiment.

+This repository has a singular purpose: to roughly reproduce [Figure 7][] from

+the [Apple TrueType Reference Manual - Chapter 2: Font Engine - Distinguishing

+the inside from the outside of a glyph][TrueType]:

+

+![Figure 7][]

+

+I have not read a single word of that reference manual, proceed accordingly.

+

 [`sdf-winding`]:  https://git.rcrnstn.net/rcrnstn/sdf-winding

 [glyph]:          https://en.wikipedia.org/wiki/Glyph

 [winding number]: https://en.wikipedia.org/wiki/Winding_number

 [SDF]:            https://en.wikipedia.org/wiki/Signed_distance_function

+[Figure 7]:       https://developer.apple.com/fonts/TrueType-Reference-Manual/RM02/FE6.gif

+[TrueType]:       https://developer.apple.com/fonts/TrueType-Reference-Manual/RM02/Chap2.html#distinguishing

 ## License