[docs] Document remaining sections
diff --git a/src/hb-ot-color.cc b/src/hb-ot-color.cc
index 78c462f..8150b5e 100644
--- a/src/hb-ot-color.cc
+++ b/src/hb-ot-color.cc
@@ -40,6 +40,16 @@
#include "hb-ot-layout.hh"
+/**
+ * SECTION:hb-ot-color
+ * @title: hb-ot-color
+ * @short_description: OpenType Color Fonts
+ * @include: hb-ot.h
+ *
+ * Functions for fetching color-font information from OpenType font faces.
+ **/
+
+
static inline const OT::COLR&
_get_colr (hb_face_t *face)
{
diff --git a/src/hb-ot-font.cc b/src/hb-ot-font.cc
index f0b6208..7a45168 100644
--- a/src/hb-ot-font.cc
+++ b/src/hb-ot-font.cc
@@ -41,6 +41,16 @@
#include "hb-ot-color-cbdt-table.hh"
+/**
+ * SECTION:hb-ot-font
+ * @title: hb-ot-font
+ * @short_description: OpenType font implementation
+ * @include: hb-ot.h
+ *
+ * Functions for using OpenType fonts with hb_shape().
+ **/
+
+
static hb_bool_t
hb_ot_get_nominal_glyph (hb_font_t *font HB_UNUSED,
void *font_data,
diff --git a/src/hb-ot-layout.cc b/src/hb-ot-layout.cc
index befa838..6c5f0d4 100644
--- a/src/hb-ot-layout.cc
+++ b/src/hb-ot-layout.cc
@@ -45,6 +45,16 @@
#include "hb-ot-name-table.hh"
+/**
+ * SECTION:hb-ot-layout
+ * @title: hb-ot-layout
+ * @short_description: OpenType Layout
+ * @include: hb-ot.h
+ *
+ * Functions for querying OpenType Layout features in the font face.
+ **/
+
+
static const OT::kern::accelerator_t& _get_kern (hb_face_t *face)
{
if (unlikely (!hb_ot_shaper_face_data_ensure (face))) return Null(OT::kern::accelerator_t);
diff --git a/src/hb-ot-math.cc b/src/hb-ot-math.cc
index c693f48..92c2948 100644
--- a/src/hb-ot-math.cc
+++ b/src/hb-ot-math.cc
@@ -29,6 +29,17 @@
#include "hb-ot-face.hh"
#include "hb-ot-math-table.hh"
+
+/**
+ * SECTION:hb-ot-math
+ * @title: hb-ot-math
+ * @short_description: OpenType Math information
+ * @include: hb-ot.h
+ *
+ * Functions for fetching mathematics layout data from OpenType fonts.
+ **/
+
+
static inline const OT::MATH&
_get_math (hb_face_t *face)
{
diff --git a/src/hb-ot-name.cc b/src/hb-ot-name.cc
index 28a45f0..2bf2ae5 100644
--- a/src/hb-ot-name.cc
+++ b/src/hb-ot-name.cc
@@ -32,6 +32,16 @@
#include "hb-utf.hh"
+/**
+ * SECTION:hb-ot-name
+ * @title: hb-ot-name
+ * @short_description: OpenType font name information
+ * @include: hb-ot.h
+ *
+ * Functions for fetching name strings from OpenType fonts.
+ **/
+
+
static inline const OT::name_accelerator_t&
_get_name (hb_face_t *face)
{
diff --git a/src/hb-ot-shape.cc b/src/hb-ot-shape.cc
index 32c5020..c55d8dc 100644
--- a/src/hb-ot-shape.cc
+++ b/src/hb-ot-shape.cc
@@ -42,6 +42,16 @@
#include "hb-aat-layout.hh"
+/**
+ * SECTION:hb-ot-shape
+ * @title: hb-ot-shape
+ * @short_description: OpenType shaping support
+ * @include: hb-ot.h
+ *
+ * Support functions for OpenType shaping related queries.
+ **/
+
+
static bool
_hb_apply_morx (hb_face_t *face)
{
