diff --git a/OB3.mediawiki b/OB3.mediawiki
index 9bca69b..e55c64f 100644
--- a/OB3.mediawiki
+++ b/OB3.mediawiki
@@ -33,5 +33,7 @@ for (int i = 0; i < face_count; i++) {
 }</pre>
 
 == '''Face sides''' ==
+A '''negative''' face_back or face_front value indicates a '''solid colour''', whereas a '''positive''' value indicates a '''texture'''.
 
-A '''negative''' face_back or face_front value indicates a '''solid colour''', whereas a '''positive''' value indicates a '''texture'''.
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+== '''Shading''' ==
+The hex value '''0xbc614e''' (or 12345678 in decimal) is believed to be used as a trigger for Gouraud shading.
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