diff --git a/include/assimp/material.h b/include/assimp/material.h
index 30db265e8..484a5192a 100644
--- a/include/assimp/material.h
+++ b/include/assimp/material.h
@@ -334,7 +334,12 @@ enum aiTextureType {
 #define AI_TEXTURE_TYPE_MAX aiTextureType_TRANSMISSION
 
 // -------------------------------------------------------------------------------
-// Get a string for a given aiTextureType
+/**
+ * @brief  Get a string for a given aiTextureType
+ *
+ * @param  in  The texture type
+ * @return The description string for the texture type.
+ */
 ASSIMP_API const char *aiTextureTypeToString(enum aiTextureType in);
 
 // ---------------------------------------------------------------------------
@@ -425,7 +430,8 @@ enum aiShadingMode {
 };
 
 // ---------------------------------------------------------------------------
-/** @brief Defines some mixed flags for a particular texture.
+/** 
+ *  @brief Defines some mixed flags for a particular texture.
  *
  *  Usually you'll instruct your cg artists how textures have to look like ...
  *  and how they will be processed in your application. However, if you use
@@ -464,7 +470,8 @@ enum aiTextureFlags {
 };
 
 // ---------------------------------------------------------------------------
-/** @brief Defines alpha-blend flags.
+/** 
+ *  @brief Defines alpha-blend flags.
  *
  *  If you're familiar with OpenGL or D3D, these flags aren't new to you.
  *  They define *how* the final color value of a pixel is computed, basing
@@ -508,7 +515,8 @@ enum aiBlendMode {
 #include "./Compiler/pushpack1.h"
 
 // ---------------------------------------------------------------------------
-/** @brief Defines how an UV channel is transformed.
+/** 
+ *  @brief Defines how an UV channel is transformed.
  *
  *  This is just a helper structure for the #AI_MATKEY_UVTRANSFORM key.
  *  See its documentation for more details.
@@ -552,8 +560,8 @@ struct aiUVTransform {
 
 //! @cond AI_DOX_INCLUDE_INTERNAL
 // ---------------------------------------------------------------------------
-/** @brief A very primitive RTTI system for the contents of material
- *  properties.
+/** 
+ *  @brief A very primitive RTTI system for the contents of material properties.
  */
 enum aiPropertyTypeInfo {
     /** Array of single-precision (32 Bit) floats
@@ -698,7 +706,14 @@ struct aiMaterial
 #ifdef __cplusplus
 
 public:
+    /** 
+     * @brief  The class constructor.
+     */
     aiMaterial();
+
+    /**
+     * @brief The class destructor.
+     */
     ~aiMaterial();
 
     // -------------------------------------------------------------------
@@ -1016,7 +1031,7 @@ extern "C" {
 // Clearcoat
 // ---------
 // Clearcoat layer intensity. 0.0 = none (disabled)
-#define AI_MATKEY_CLEARCOAT_FACTOR "$mat.clearcoat.factor", 0, 0
+#define AI_MATKEY_CLEARCOAT_FACTOR           "$mat.clearcoat.factor", 0, 0
 #define AI_MATKEY_CLEARCOAT_ROUGHNESS_FACTOR "$mat.clearcoat.roughnessFactor", 0, 0
 #define AI_MATKEY_CLEARCOAT_TEXTURE aiTextureType_CLEARCOAT, 0
 #define AI_MATKEY_CLEARCOAT_ROUGHNESS_TEXTURE aiTextureType_CLEARCOAT, 1
@@ -1046,23 +1061,23 @@ extern "C" {
 
 // Emissive
 // --------
-#define AI_MATKEY_USE_EMISSIVE_MAP "$mat.useEmissiveMap", 0, 0
+#define AI_MATKEY_USE_EMISSIVE_MAP   "$mat.useEmissiveMap", 0, 0
 #define AI_MATKEY_EMISSIVE_INTENSITY "$mat.emissiveIntensity", 0, 0
-#define AI_MATKEY_USE_AO_MAP "$mat.useAOMap", 0, 0
+#define AI_MATKEY_USE_AO_MAP         "$mat.useAOMap", 0, 0
 
 // ---------------------------------------------------------------------------
 // Pure key names for all texture-related properties
 //! @cond MATS_DOC_FULL
-#define _AI_MATKEY_TEXTURE_BASE "$tex.file"
-#define _AI_MATKEY_UVWSRC_BASE "$tex.uvwsrc"
-#define _AI_MATKEY_TEXOP_BASE "$tex.op"
-#define _AI_MATKEY_MAPPING_BASE "$tex.mapping"
-#define _AI_MATKEY_TEXBLEND_BASE "$tex.blend"
+#define _AI_MATKEY_TEXTURE_BASE       "$tex.file"
+#define _AI_MATKEY_UVWSRC_BASE        "$tex.uvwsrc"
+#define _AI_MATKEY_TEXOP_BASE         "$tex.op"
+#define _AI_MATKEY_MAPPING_BASE       "$tex.mapping"
+#define _AI_MATKEY_TEXBLEND_BASE      "$tex.blend"
 #define _AI_MATKEY_MAPPINGMODE_U_BASE "$tex.mapmodeu"
 #define _AI_MATKEY_MAPPINGMODE_V_BASE "$tex.mapmodev"
-#define _AI_MATKEY_TEXMAP_AXIS_BASE "$tex.mapaxis"
-#define _AI_MATKEY_UVTRANSFORM_BASE "$tex.uvtrafo"
-#define _AI_MATKEY_TEXFLAGS_BASE "$tex.flags"
+#define _AI_MATKEY_TEXMAP_AXIS_BASE   "$tex.mapaxis"
+#define _AI_MATKEY_UVTRANSFORM_BASE   "$tex.uvtrafo"
+#define _AI_MATKEY_TEXFLAGS_BASE      "$tex.flags"
 //! @endcond
 
 // ---------------------------------------------------------------------------