diff --git a/src/gl_draw.c b/src/gl_draw.c
index 80d1055..6551df2 100644
--- a/src/gl_draw.c
+++ b/src/gl_draw.c
@@ -493,15 +493,23 @@ void animate()
  * press T to decrease the day
  * press j to increase the year
  * press J to decrease the year
+ * press b to toggle GL_CULL_FACE
+ * press D to toggle disco mode
+ * press S to toggle shade model between GL_SMOOTH and GL_FLAT
+ * press n to toggle normals
+ * press k to increase length of normals
+ * press l to decrease length of normals
  * press x to rotate the middle object in x direction
+ * press X to rotate the middle object in -x direction
  * press y to rotate the middle object in y direction
+ * press Y to rotate the middle object in -y direction
  * press c to rotate the middle object in z direction
+ * press C to rotate the middle object in -z direction
  * press w to translate the whole scene in y direction
  * press s to translate the whole scene in -y direction
  * press a to translate the whole scene in -x direction
  * press d to translate the whole scene in x direction
- * press q to translate the whole scene in z direction
- * press e to translate the whole scene in -z direction
+ * press q to quit
  *
  * @param key which was pressed
  * @param x coordinate