doc: make section headers in class/function docs have sane size.

Similar reasoning as in mosra/corrade@93b8308bc6a4def9d4564a6cea236cabe54fe063.

doc/scenegraph.dox

@@ -227,7 +227,7 @@ by calling @ref Object::setClean(). @ref Camera3D "Camera", for example, calls
 it automatically before it starts rendering, as it needs its own inverse
 transformation to properly draw the objects.
 
-See @ref AbstractFeature-subclassing-caching for more information.
+See @ref SceneGraph-AbstractFeature-subclassing-caching for more information.
 
 @section scenegraph-construction-order Construction and destruction order
 

src/Magnum/AbstractFramebuffer.h

@@ -152,7 +152,8 @@ namespace Implementation { struct FramebufferState; }
 
 See @ref DefaultFramebuffer and @ref Framebuffer for more information.
 
-@section AbstractFramebuffer-performance-optimization Performance optimizations and security
+@anchor AbstractFramebuffer-performance-optimization
+## Performance optimizations and security
 
 The engine tracks currently bound framebuffer and current viewport to avoid
 unnecessary calls to @fn_gl{BindFramebuffer} and @fn_gl{Viewport} when

src/Magnum/AbstractResourceLoader.h

@@ -40,7 +40,7 @@ namespace Magnum {
 
 Provides (a)synchronous resource loading for @ref ResourceManager.
 
-@section AbstractResourceLoader-usage Usage and subclassing
+## Usage and subclassing
 
 Usage is done by subclassing. Subclass instances can be added to
 @ref ResourceManager using @ref ResourceManager::setLoader(). After adding the

src/Magnum/AbstractShaderProgram.h

@@ -46,7 +46,8 @@ namespace Implementation {
 /**
 @brief Base for shader program implementations
 
-@section AbstractShaderProgram-subclassing Subclassing workflow
+@anchor AbstractShaderProgram-subclassing
+## Subclassing workflow
 
 This class is designed to be used via subclassing. Subclasses define these
 functions and properties:
@@ -116,7 +117,8 @@ MyShader& setSpecularTexture(Texture2D& texture) {
 }
 @endcode
 
-@subsection AbstractShaderProgram-attribute-location Binding attribute location
+@anchor AbstractShaderProgram-attribute-location
+### Binding attribute location
 
 The preferred workflow is to specify attribute location for vertex shader input
 attributes and fragment shader output attributes explicitly in the shader code,
@@ -184,7 +186,8 @@ bindFragmentDataLocationIndexed(NormalOutput, 1, "normal");
 @todo @es_extension{EXT,separate_shader_objects} supports explicit attrib
     location
 
-@subsection AbstractShaderProgram-uniform-location Uniform locations
+@anchor AbstractShaderProgram-uniform-location
+### Uniform locations
 
 The preferred workflow is to specify uniform locations directly in the shader
 code, e.g.:
@@ -219,7 +222,8 @@ Int normalMatrixUniform = uniformLocation("normalMatrix");
     @ref Magnum::AbstractShaderProgram::uniformLocation() "uniformLocation()"
     instead.
 
-@subsection AbstractShaderProgram-texture-units Specifying texture binding units
+@anchor AbstractShaderProgram-texture-units
+### Specifying texture binding units
 
 The preferred workflow is to specify texture binding unit directly in the
 shader code, e.g.:
@@ -251,7 +255,8 @@ setUniform(uniformLocation("specularTexture"), 1);
     @ref Magnum::AbstractShaderProgram::setUniform(Int, const T&) "setUniform(Int, Int)"
     instead.
 
-@section AbstractShaderProgram-rendering-workflow Rendering workflow
+@anchor AbstractShaderProgram-rendering-workflow
+## Rendering workflow
 
 Basic workflow with %AbstractShaderProgram subclasses is: instance shader
 class, configure attribute binding in meshes (see @ref Mesh-configuration "Mesh documentation"
@@ -268,7 +273,8 @@ shader.setTransformation(transformation)
 mesh.draw(shader);
 @endcode
 
-@section AbstractShaderProgram-types Mapping between GLSL and Magnum types
+@anchor AbstractShaderProgram-types
+## Mapping between GLSL and %Magnum types
 
 See @ref types for more information, only types with GLSL equivalent can be used
 (and their super- or subclasses with the same size and underlying type). See
@@ -306,7 +312,8 @@ also @ref Attribute::DataType enum for additional type options.
     @ref Magnum::Matrix4x3 "Matrix4x3") are not available in OpenGL ES 2.0.
 @requires_gl Double attributes and uniforms are not available in OpenGL ES.
 
-@section AbstractShaderProgram-performance-optimization Performance optimizations
+@anchor AbstractShaderProgram-performance-optimization
+## Performance optimizations
 
 %Shader limits (such as @ref maxVertexAttributes()) are cached, so repeated
 queries don't result in repeated @fn_gl{Get} calls.

src/Magnum/AbstractTexture.h

@@ -56,13 +56,14 @@ Encapsulates one OpenGL texture object. See @ref Texture, @ref TextureArray,
 @ref BufferTexture and @ref MultisampleTexture documentation for more
 information and usage examples.
 
-@section AbstractTexture-webgl-restrictions WebGL restrictions
+## WebGL restrictions
 
 @ref MAGNUM_TARGET_WEBGL "WebGL" puts some restrictions on type of data
 submitted to @ref Texture::setSubImage() "*Texture::setSubImage()", see its
 documentation for details.
 
-@section AbstractTexture-performance-optimization Performance optimizations and security
+@anchor AbstractTexture-performance-optimization
+## Performance optimizations and security
 
 The engine tracks currently bound textures in all available texture units to
 avoid unnecessary calls to @fn_gl{ActiveTexture} and @fn_gl{BindTexture}.

src/Magnum/Audio/AbstractImporter.h

@@ -43,7 +43,7 @@ Provides interface for importing various audio formats. See @ref plugins for
 more information and `*Importer` classes in @ref Audio namespace for available
 importer plugins.
 
-@section Audio-AbstractImporter-subclassing Subclassing
+## Subclassing
 
 Plugin implements function @ref doFeatures(), @ref doIsOpened(), one of or both
 @ref doOpenData() and @ref doOpenFile() functions, function @ref doClose() and

src/Magnum/Buffer.h

@@ -122,7 +122,7 @@ namespace Implementation { struct BufferState; }
 Encapsulates one OpenGL buffer object and provides functions for convenient
 data updates.
 
-@section Buffer-data Data updating
+## Data updating
 
 Default way to set or update buffer data with @ref setData() or @ref setSubData()
 is to use @ref Corrade::Containers::ArrayReference. See its documentation for
@@ -138,7 +138,8 @@ std::vector<Vector3> data;
 buffer.setData(data, BufferUsage::StaticDraw);
 @endcode
 
-@subsection Buffer-data-mapping Memory mapping
+@anchor Buffer-data-mapping
+## Memory mapping
 
 %Buffer data can be also updated asynchronously. First you need to allocate
 the buffer to desired size by passing `nullptr` to @ref setData(), e.g.:
@@ -166,7 +167,7 @@ for(std::size_t i: {7, 27, 56, 128}) {
 CORRADE_INTERNAL_ASSERT_OUTPUT(buffer.unmap());
 @endcode
 
-@section Buffer-webgl-restrictions WebGL and NaCl restrictions
+## WebGL and NaCl restrictions
 
 Buffers in @ref MAGNUM_TARGET_WEBGL "WebGL" and @ref CORRADE_TARGET_NACL "NaCl"
 need to be bound only to one unique target, i.e., @ref Buffer bound to
@@ -183,7 +184,7 @@ Buffer indices{Buffer::Target::ElementArray};
 To ease up the development, @ref Mesh checks proper target hint when adding
 vertex and index buffers in both WebGL and NaCl.
 
-@section Buffer-performance-optimization Performance optimizations
+## Performance optimizations
 
 The engine tracks currently bound buffers to avoid unnecessary calls to
 @fn_gl{BindBuffer}. If the buffer is already bound to some target, functions

src/Magnum/BufferTexture.h

@@ -157,7 +157,7 @@ enum class BufferTextureFormat: GLenum {
 This texture is, unlike classic textures such as @ref Texture used as simple
 data source, without any unnecessary interpolation and wrapping methods.
 
-@section BufferTexture-usage Usage
+## Usage
 
 %Texture data are stored in buffer and after binding the buffer to the texture
 using @ref setBuffer(), you can fill the buffer at any time using data setting
@@ -185,7 +185,7 @@ In shader, the texture is used via `samplerBuffer`, `isamplerBuffer` or
 are integer coordinates passed to `texelFetch()`. See @ref AbstractShaderProgram
 documentation for more information about usage in shaders.
 
-@section BufferTexture-performance-optimization Performance optimizations
+## Performance optimizations
 
 If extension @extension{EXT,direct_state_access} is available, @ref setBuffer()
 functions use DSA to avoid unnecessary calls to @fn_gl{ActiveTexture} and

src/Magnum/CubeMapTexture.h

@@ -50,7 +50,7 @@ turned upside down (+Y is top):
               | +Y |
               +----+
 
-@section CubeMapTexture-usage Basic usage
+## Basic usage
 
 See @ref Texture documentation for introduction.
 

src/Magnum/CubeMapTextureArray.h

@@ -43,7 +43,7 @@ namespace Magnum {
 
 See @ref CubeMapTexture documentation for introduction.
 
-@section CubeMapTextureArray-usage Usage
+## Usage
 
 See @ref Texture documentation for introduction.
 

src/Magnum/DebugMessage.h

@@ -46,7 +46,7 @@ Allows retrieving and inserting debug messages from and to OpenGL command
 stream, for example with conjunction with various debuggers, such as Apitrace
 or gDEBugger.
 
-@section DebugMessage-usage Basic usage
+## Basic usage
 
 To retrieve debug messages from either the GL or your application you need to
 have OpenGL 4.3 or @extension{KHR,debug} desktop/ES extension. You need to

src/Magnum/DebugTools/ForceRenderer.h

@@ -85,7 +85,8 @@ class ForceRendererOptions {
 Visualizes force pushing on object by an arrow of the same direction and size.
 See @ref debug-tools-renderers for more information.
 
-@section ForceRenderer-usage Basic usage
+@anchor DebugTools-ForceRenderer-usage
+## Basic usage
 
 Example code:
 @code
@@ -109,8 +110,8 @@ template<UnsignedInt dimensions> class MAGNUM_DEBUGTOOLS_EXPORT ForceRenderer: p
          * @param forcePosition Where to render the force, relative to object
          * @param force         Force vector
          * @param options       Options resource key. See
-         *      @ref ForceRenderer-usage "class documentation" for more
+         *      @ref DebugTools-ForceRenderer-usage "class documentation" for
-         *      information.
+         *      more information.
          * @param drawables     Drawable group
          *
          * The renderer is automatically added to object's features, @p force is

src/Magnum/DebugTools/ObjectRenderer.h

@@ -69,7 +69,8 @@ class ObjectRendererOptions {
 Visualizes object position, rotation and scale using colored axes. See
 @ref debug-tools-renderers for more information.
 
-@section ObjectRenderer-usage Basic usage
+@anchor DebugTools-ObjectRenderer-usage
+## Basic usage
 
 Example code:
 @code
@@ -89,8 +90,8 @@ template<UnsignedInt dimensions> class MAGNUM_DEBUGTOOLS_EXPORT ObjectRenderer:
          * @brief Constructor
          * @param object    Object for which to create debug renderer
          * @param options   Options resource key. See
-         *      @ref ObjectRenderer-usage "class documentation" for more
+         *      @ref DebugTools-ObjectRenderer-usage "class documentation" for
-         *      information.
+         *      more information.
          * @param drawables Drawable group
          *
          * The renderer is automatically added to object's features.

src/Magnum/DebugTools/ShapeRenderer.h

@@ -120,7 +120,8 @@ class ShapeRendererOptions {
 Visualizes collision shapes using wireframe primitives. See
 @ref debug-tools-renderers for more information.
 
-@section ShapeRenderer-usage Basic usage
+@anchor DebugTools-ShapeRenderer-usage
+## Basic usage
 
 Example code:
 @code
@@ -147,8 +148,8 @@ template<UnsignedInt dimensions> class MAGNUM_DEBUGTOOLS_EXPORT ShapeRenderer: p
          * @brief Constructor
          * @param shape     Shape for which to create debug renderer
          * @param options   Options resource key. See
-         *      @ref ShapeRenderer-usage "class documentation" for more
+         *      @ref DebugTools-ShapeRenderer-usage "class documentation" for
-         *      information.
+         *      more information.
          * @param drawables Drawable group
          *
          * The renderer is automatically added to shape's object features,

src/Magnum/DefaultFramebuffer.h

@@ -41,7 +41,8 @@ created when @ref Context is created and it is available through global
 variable @ref defaultFramebuffer. It is by default mapped to whole screen
 surface.
 
-@section DefaultFramebuffer-usage Usage
+@anchor DefaultFramebuffer-usage
+## Usage
 
 When you are using only the default framebuffer, the usage is simple. You
 must ensure that it is properly resized when application surface is resized,
@@ -69,7 +70,7 @@ void drawEvent() {
 See Framebuffer documentation for more involved usage, usage of non-default or
 multiple framebuffers.
 
-@section DefaultFramebuffer-performance-optimization Performance optimizations
+## Performance optimizations
 
 See also @ref AbstractFramebuffer-performance-optimization "relevant section in AbstractFramebuffer".
 

src/Magnum/Framebuffer.h

@@ -45,7 +45,8 @@ Unlike @ref DefaultFramebuffer, which is used for on-screen rendering, this
 class is used for off-screen rendering, usable either in windowless
 applications, texture generation or for various post-processing effects.
 
-@section Framebuffer-usage Example usage
+@anchor Framebuffer-usage
+## Example usage
 
 See @ref DefaultFramebuffer-usage "DefaultFramebuffer documentation" for
 introduction. Imagine you have shader with multiple outputs (e.g. for deferred
@@ -88,7 +89,7 @@ void drawEvent() {
 }
 @endcode
 
-@section Framebuffer-performance-optimization Performance optimizations
+## Performance optimizations
 
 See also @ref AbstractFramebuffer-performance-optimization "relevant section in AbstractFramebuffer".
 

src/Magnum/Math/Angle.h

@@ -45,7 +45,7 @@ namespace Magnum { namespace Math {
 Along with Rad provides convenience classes to make angle specification and
 conversion less error-prone.
 
-@section Rad-usage Usage
+## Usage
 
 You can enter the value either by using literal:
 @code
@@ -92,7 +92,7 @@ Float d = Double(b);            // 60.0
 //Float e = b;                  // error, no implicit conversion
 @endcode
 
-@section Rad-conversions Requirement of explicit conversion
+## Requirement of explicit conversion
 
 The requirement of explicit conversions from and to unitless types helps to
 reduce unit-based errors. Consider following example with implicit conversions

src/Magnum/Mesh.h

@@ -120,7 +120,8 @@ namespace Implementation { struct MeshState; }
 /**
 @brief %Mesh
 
-@section Mesh-configuration Mesh configuration
+@anchor Mesh-configuration
+## %Mesh configuration
 
 You have to specify at least primitive and vertex/index count using
 @ref setPrimitive() and @ref setCount(). Then fill your vertex buffers with
@@ -146,9 +147,9 @@ different usage) or store data for more meshes in one buffer.
 If vertex/index count or instance count is zero, the mesh is empty and no draw
 commands are issued when calling @ref draw().
 
-@subsection Mesh-configuration-examples Example mesh configuration
+### Example mesh configuration
 
-@subsubsection Mesh-configuration-examples-nonindexed Basic non-indexed mesh
+#### Basic non-indexed mesh
 
 @code
 // Custom shader, needing only position data
@@ -173,7 +174,7 @@ mesh.setPrimitive(MeshPrimitive::Triangles)
     .addVertexBuffer(vertexBuffer, 0, MyShader::Position{});
 @endcode
 
-@subsubsection Mesh-configuration-examples-nonindexed-phong Interleaved vertex data
+#### Interleaved vertex data
 
 @code
 // Non-indexed primitive with positions and normals
@@ -190,7 +191,7 @@ mesh.setPrimitive(plane.primitive())
     .addVertexBuffer(buffer, 0, Shaders::Phong::Position{}, Shaders::Phong::Normal{});
 @endcode
 
-@subsubsection Mesh-configuration-examples-indexed-phong Indexed mesh
+#### Indexed mesh
 
 @code
 // Custom shader
@@ -254,7 +255,7 @@ mesh.setPrimitive(plane.primitive())
 Or, if you plan to use the mesh with stock shaders, you can just use
 @ref MeshTools::compile().
 
-@subsubsection Mesh-configuration-examples-data-options Specific formats of vertex data
+#### Specific formats of vertex data
 
 @code
 // Custom shader with colors specified as four floating-point values
@@ -300,19 +301,20 @@ mesh.addVertexBuffer(colorBuffer, 0, MyShader::Color{
     MyShader::Color::DataOption::Normalized});
 @endcode
 
-@section Mesh-drawing Rendering meshes
+## Rendering meshes
 
 Basic workflow is: bind specific framebuffer for drawing (if needed), set up
 respective shader (see
 @ref AbstractShaderProgram-rendering-workflow "AbstractShaderProgram documentation"
 for more infromation) and call @ref Mesh::draw().
 
-@section Mesh-webgl-restrictions WebGL restrictions
+## WebGL restrictions
 
 @ref MAGNUM_TARGET_WEBGL "WebGL" puts some restrictions on vertex buffer
 layout, see @ref addVertexBuffer() documentation for details.
 
-@section Mesh-performance-optimization Performance optimizations
+@anchor Mesh-performance-optimization
+## Performance optimizations
 
 If @extension{APPLE,vertex_array_object} (part of OpenGL 3.0), OpenGL ES 3.0 or
 @es_extension{OES,vertex_array_object} on OpenGL ES 2.0 is supported, VAOs are

src/Magnum/MultisampleTexture.h

@@ -65,7 +65,7 @@ Template class for 2D mulitsample texture and 2D multisample texture array.
 Used only from shaders for manual multisample resolve and other operations. See
 also @ref AbstractTexture documentation for more information.
 
-@section MultisampleTexture-usage Usage
+## Usage
 
 As multisample textures have no sampler state, the only thing you need is to
 set storage:

src/Magnum/Platform/Screen.h

@@ -53,7 +53,7 @@ See @ref BasicScreenedApplication for more information.
 If exactly one application header is included, this class is also aliased to
 `Platform::Screen`.
 
-@section Screen-explicit-specializations Explicit template specializations
+## Explicit template specializations
 
 The following specialization are explicitly compiled into each particular
 `*Application` library. For other specializations you have to use

src/Magnum/Platform/ScreenedApplication.h

@@ -75,7 +75,7 @@ for(Screen* s = app.backScreen(); s; s = s->nextNearerScreen()) {
 }
 @endcode
 
-@section ScreenedApplication-explicit-specializations Explicit template specializations
+## Explicit template specializations
 
 The following specialization are explicitly compiled into each particular
 `*Application` library. For other specializations you have to use

src/Magnum/RectangleTexture.h

@@ -43,7 +43,7 @@ namespace Magnum {
 
 See also @ref AbstractTexture documentation for more information.
 
-@section RectangleTexture-usage Usage
+## Usage
 
 Common usage is to fully configure all texture parameters and then set the
 data from e.g. @ref Image2D. Example configuration:

src/Magnum/Renderbuffer.h

@@ -42,7 +42,7 @@ namespace Implementation { struct FramebufferState; }
 Attachable to framebuffer as render target, see @ref Framebuffer documentation
 for more information.
 
-@section Renderbuffer-performance-optimization Performance optimizations
+## Performance optimizations
 
 The engine tracks currently bound renderbuffer to avoid unnecessary calls to
 @fn_gl{BindRenderbuffer} in @ref setStorage(). %Renderbuffer limits and

src/Magnum/ResourceManager.h

@@ -163,7 +163,7 @@ template<class T> class ResourceManagerData {
 Provides storage for arbitrary set of types, accessible globally using
 @ref instance().
 
-@section ResourceManager-usage Usage
+## Usage
 
 Each resource is referenced from @ref Resource class. For optimizing
 performance, each resource can be set as mutable or final. Mutable resources

src/Magnum/SceneGraph/AbstractCamera.h

@@ -58,13 +58,14 @@ See Drawable documentation for more information. This class is not directly
 instantiatable, use @ref BasicCamera2D or @ref BasicCamera3D subclasses
 instead.
 
-@section AbstractCamera-explicit-specializations Explicit template specializations
+@anchor SceneGraph-AbstractCamera-explicit-specializations
+## Explicit template specializations
 
-The following specialization are explicitly compiled into @ref SceneGraph
+The following specializations are explicitly compiled into @ref SceneGraph
 library. For other specializations (e.g. using @ref Double type) you have to
 use @ref AbstractCamera.hpp implementation file to avoid linker errors. See
-also relevant sections in @ref Camera2D-explicit-specializations "Camera2D"
+also relevant sections in @ref SceneGraph-Camera2D-explicit-specializations "Camera2D"
-and @ref Camera3D-explicit-specializations "Camera3D" class documentation or
+and @ref SceneGraph-Camera3D-explicit-specializations "Camera3D" class documentation or
 @ref compilation-speedup-hpp for more information.
 
 -   @ref AbstractCamera2D

src/Magnum/SceneGraph/AbstractFeature.h

@@ -84,13 +84,14 @@ Contained in @ref Object, takes care of transformation caching. See
 Uses @ref Corrade::Containers::LinkedList for accessing holder object and
 sibling features.
 
-@section AbstractFeature-subclassing Subclassing
+## Subclassing
 
 Feature is templated on dimension count and underlying transformation type, so
 it can be used only on object having transformation with the same dimension
 count and type.
 
-@subsection AbstractFeature-subclassing-caching Caching transformations in features
+@anchor SceneGraph-AbstractFeature-subclassing-caching
+### Caching transformations in features
 
 Features can cache absolute transformation of the object instead of computing
 it from scratch every time to achieve better performance. See
@@ -120,7 +121,7 @@ class CachingFeature: public SceneGraph::AbstractFeature3D {
 Before using the cached value explicitly request object cleaning by calling
 `object()->setClean()`.
 
-@subsection AbstractFeature-subclassing-transformation Accessing object transformation
+### Accessing object transformation
 
 Features has by default access only to @ref AbstractObject, which is base of
 @ref Object not depending on any particular transformation implementation. This
@@ -150,9 +151,9 @@ from @ref AbstractBasicTranslationRotationScaling3D "AbstractTranslationRotation
 which is derived from @ref AbstractBasicTranslationRotation3D "AbstractTranslationRotation3D",
 which is automatically extracted from the reference in our constructor.
 
-@section AbstractFeature-explicit-specializations Explicit template specializations
+## Explicit template specializations
 
-The following specialization are explicitly compiled into @ref SceneGraph
+The following specializations are explicitly compiled into @ref SceneGraph
 library. For other specializations (e.g. using @ref Double type) you have to
 use @ref AbstractFeature.hpp implementation file to avoid linker errors. See
 also @ref compilation-speedup-hpp for more information.

src/Magnum/SceneGraph/AbstractGroupedFeature.h

@@ -41,7 +41,7 @@ namespace Magnum { namespace SceneGraph {
 
 Used together with @ref FeatureGroup.
 
-@section AbstractGroupedFeature-subclassing Subclassing
+## Subclassing
 
 Usage is via subclassing the feature using [CRTP](http://en.wikipedia.org/wiki/Curiously_recurring_template_pattern)
 and typedef'ing @ref FeatureGroup to accept only given type, e.g.:
@@ -53,9 +53,9 @@ class Drawable: public SceneGraph::AbstractGroupedFeature3D<Drawable> {
 typedef SceneGraph::FeatureGroup3D<Drawable> DrawableGroup;
 @endcode
 
-@section AbstractGroupedFeature-explicit-specializations Explicit template specializations
+## Explicit template specializations
 
-The following specialization are explicitly compiled into @ref SceneGraph
+The following specializations are explicitly compiled into @ref SceneGraph
 library. For other specializations (e.g. using @ref Double type) you have to
 use @ref FeatureGroup.hpp implementation file to avoid linker errors. See also
 @ref compilation-speedup-hpp for more information.

src/Magnum/SceneGraph/AbstractObject.h

@@ -55,13 +55,14 @@ for(AbstractFeature* feature = o->firstFeature(); feature; feature = feature->ne
 }
 @endcode
 
-@section AbstractObject-explicit-specializations Explicit template specializations
+@anchor SceneGraph-AbstractObject-explicit-specializations
+## Explicit template specializations
 
-The following specialization are explicitly compiled into @ref SceneGraph
+The following specializations are explicitly compiled into @ref SceneGraph
 library. For other specializations (e.g. using @ref Double type) you have to
 use @ref Object.hpp implementation file to avoid linker errors. See also
-relevant sections in @ref Object-explicit-specializations "Object" and
+relevant sections in @ref SceneGraph-Object-explicit-specializations "Object" and
-@ref AbstractTransformation-explicit-specializations "AbstractTransformation"
+@ref SceneGraph-AbstractTransformation-explicit-specializations "AbstractTransformation"
 class documentation or @ref compilation-speedup-hpp for more information.
 
 -   @ref AbstractObject2D

src/Magnum/SceneGraph/AbstractTransformation.h

@@ -39,9 +39,10 @@ namespace Magnum { namespace SceneGraph {
 
 Provides transformation implementation for @ref Object instances.
 
-@section AbstractTransformation-explicit-specializations Explicit template specializations
+@anchor SceneGraph-AbstractTransformation-explicit-specializations
+## Explicit template specializations
 
-The following specialization are explicitly compiled into @ref SceneGraph
+The following specializations are explicitly compiled into @ref SceneGraph
 library. For other specializations (e.g. using @ref Double type) you have to
 use @ref Object.hpp implementation file to avoid linker errors. See
 @ref compilation-speedup-hpp for more information.

src/Magnum/SceneGraph/Animable.h

@@ -65,7 +65,7 @@ Debug MAGNUM_SCENEGRAPH_EXPORT operator<<(Debug debug, AnimationState value);
 Adds animation feature to object. Each %Animable is part of some
 @ref AnimableGroup, which takes care of running the animations.
 
-@section Animable-usage Usage
+## Usage
 
 First thing is to add @ref Animable feature to some object and implement
 @ref animationStep(). You can do it conveniently using multiple inheritance
@@ -120,7 +120,7 @@ void MyApplication::drawEvent() {
 }
 @endcode
 
-@section Animable-performance Using animable groups to improve performance
+## Using animable groups to improve performance
 
 @ref AnimableGroup is optimized for case when no animation is running -- it
 just puts itself to rest and waits until some animation changes its state to
@@ -128,7 +128,7 @@ just puts itself to rest and waits until some animation changes its state to
 pernamently running to separate group, they will not be always traversed when
 calling @ref AnimableGroup::step(), saving precious frame time.
 
-@section Animable-explicit-specializations Explicit template specializations
+## Explicit template specializations
 
 The following specializations are explicitly compiled into @ref SceneGraph
 library. For other specializations (e.g. using @ref Double type) you have to

src/Magnum/SceneGraph/Camera2D.h

@@ -45,12 +45,13 @@ camera.setProjection({4.0f/3.0f, 1.0f})
       .setAspectRatioPolicy(SceneGraph::AspectRatioPolicy::Extend);
 @endcode
 
-@section Camera2D-explicit-specializations Explicit template specializations
+@anchor SceneGraph-Camera2D-explicit-specializations
+## Explicit template specializations
 
-The following specialization are explicitly compiled into @ref SceneGraph
+The following specialization is explicitly compiled into @ref SceneGraph
 library. For other specializations (e.g. using @ref Double type) you have to
 use @ref Camera2D.hpp implementation file to avoid linker errors. See also
-relevant section in @ref AbstractCamera-explicit-specializations "AbstractCamera"
+relevant section in @ref SceneGraph-AbstractCamera-explicit-specializations "AbstractCamera"
 class documentation or @ref compilation-speedup-hpp for more information.
 
 -   @ref Camera2D

src/Magnum/SceneGraph/Camera3D.h

@@ -50,12 +50,13 @@ camera.setPerspective({}, 0.001f, 100.0f)
       .setAspectRatioPolicy(SceneGraph::AspectRatioPolicy::Extend);
 @endcode
 
-@section Camera3D-explicit-specializations Explicit template specializations
+@anchor SceneGraph-Camera3D-explicit-specializations
+## Explicit template specializations
 
-The following specialization are explicitly compiled into @ref SceneGraph
+The following specialization is explicitly compiled into @ref SceneGraph
 library. For other specializations (e.g. using @ref Double type) you have to
 use @ref Camera3D.hpp implementation file to avoid linker errors. See also
-relevant section in @ref AbstractCamera-explicit-specializations "AbstractCamera"
+relevant section in @ref SceneGraph-AbstractCamera-explicit-specializations "AbstractCamera"
 class documentation or @ref compilation-speedup-hpp for more information.
 
 -   @ref Camera3D

src/Magnum/SceneGraph/Drawable.h

@@ -40,7 +40,7 @@ Adds drawing function to the object. Each %Drawable is part of some
 @ref DrawableGroup and the whole group is drawn with particular camera using
 @ref AbstractCamera::draw().
 
-@section Drawable-usage Usage
+## Usage
 
 First thing is to add @ref Drawable feature to some object and implement
 @ref draw(). You can do it conveniently using multiple inheritance (see
@@ -91,7 +91,7 @@ void MyApplication::drawEvent() {
 }
 @endcode
 
-@section Drawable-performance Using drawable groups to improve performance
+## Using drawable groups to improve performance
 
 You can organize your drawables to multiple groups to minimize OpenGL state
 changes -- for example put all objects using the same shader, the same light
@@ -117,7 +117,7 @@ void MyApplication::drawEvent() {
 }
 @endcode
 
-@section Drawable-explicit-specializations Explicit template specializations
+## Explicit template specializations
 
 The following specializations are explicitly compiled into @ref SceneGraph
 library. For other specializations (e.g. using @ref Double type) you have to

src/Magnum/SceneGraph/Object.h

@@ -72,14 +72,15 @@ for(Object* child = o->firstChild(); child; child = child->nextSibling()) {
 }
 @endcode
 
-@section Object-explicit-specializations Explicit template specializations
+@anchor SceneGraph-Object-explicit-specializations
+## Explicit template specializations
 
-The following specialization are explicitly compiled into @ref SceneGraph
+The following specializations are explicitly compiled into @ref SceneGraph
 library. For other specializations (e.g. using @ref Double type or special
 transformation class) you have to use @ref Object.hpp implementation file to
 avoid linker errors. See also relevant sections in
-@ref AbstractObject-explicit-specializations "AbstractObject" and
+@ref SceneGraph-AbstractObject-explicit-specializations "AbstractObject" and
-@ref AbstractTransformation-explicit-specializations "AbstractTransformation"
+@ref SceneGraph-AbstractTransformation-explicit-specializations "AbstractTransformation"
 class documentation or @ref compilation-speedup-hpp for more information.
 
 -   @ref DualComplexTransformation "Object<DualComplexTransformation>"

src/Magnum/Shader.h

@@ -45,7 +45,7 @@ See @ref AbstractShaderProgram for more information.
 
 @todoc Usage...
 
-@section Shader-performance-optimization Performance optimizations
+## Performance optimizations
 
 %Shader limits and implementation-defined values (such as @ref maxUniformComponents())
 are cached, so repeated queries don't result in repeated @fn_gl{Get} calls.

src/Magnum/Shaders/MeshVisualizer.h

@@ -44,7 +44,7 @@ Uses geometry shader to visualize wireframe. You need to provide @ref Position
 attribute in your triangle mesh and call at least @ref setTransformationProjectionMatrix()
 to be able to render.
 
-@section ShadersMeshVisualizer-wireframe Wireframe visualization
+## Wireframe visualization
 
 Wireframe visualization is done by enabling @ref Flag::Wireframe. It is done
 either using geometry shaders or with help of additional vertex information.

src/Magnum/Text/AbstractFont.h

@@ -48,14 +48,14 @@ Provides interface for opening fonts, filling glyph cache and layouting the
 glyphs. See @ref plugins for more information and `*Font` classes in @ref Text
 namespace for available font plugins.
 
-@section AbstractFont-usage Usage
+## Usage
 
 First step is to open the font using @ref openData(), @ref openSingleData() or
 @ref openFile(). Next step is to prerender all the glyphs which will be used in
 text rendering later, see @ref GlyphCache for more information. See
 @ref Renderer for information about text rendering.
 
-@section AbstractFont-subclassing Subclassing
+## Subclassing
 
 Plugin implements @ref doFeatures(), @ref doClose(), @ref doLayout(), either
 @ref doCreateGlyphCache() or @ref doFillGlyphCache() and one or more of
@@ -304,7 +304,7 @@ CORRADE_ENUMSET_OPERATORS(AbstractFont::Features)
 
 Returned by @ref AbstractFont::layout().
 
-@section TextAbstractLayouter-subclassing Subclassing
+## Subclassing
 
 Plugin creates private subclass (no need to expose it to end users) and
 implements @ref doRenderGlyph(). Bounds checking on @p i is done automatically

src/Magnum/Text/AbstractFontConverter.h

@@ -45,7 +45,7 @@ Provides functionality for converting arbitrary font to different format. See
 @ref plugins for more information and `*FontConverter` classes in @ref Text
 namespace for available font converter plugins.
 
-@section AbstractFontConverter-subclassing Subclassing
+## Subclassing
 
 Plugin implements @ref doFeatures() and one or more of `exportTo*()` /
 `importFrom*()` functions based on what features are supported. Characters

src/Magnum/Text/DistanceFieldGlyphCache.h

@@ -40,7 +40,7 @@ Unlike original @ref GlyphCache converts each binary image to distance field.
 It is not possible to use non-binary colors with this cache, internal texture
 format is red channel only.
 
-@section DistanceFieldGlyphCache-usage Usage
+## Usage
 
 Usage is similar to @ref GlyphCache, additionally you need to specify size of
 resulting distance field texture.

src/Magnum/Text/GlyphCache.h

@@ -43,7 +43,7 @@ namespace Magnum { namespace Text {
 
 Contains font glyphs prerendered into texture atlas.
 
-@section GlyphCache-usage Usage
+## Usage
 
 Create %GlyphCache object with sufficient size and then call
 @ref AbstractFont::createGlyphCache() to fill it with glyphs.

src/Magnum/Text/Renderer.h

@@ -169,7 +169,7 @@ class MAGNUM_TEXT_EXPORT AbstractRenderer {
 Lays out the text into mesh using given font. Use of ligatures, kerning etc.
 depends on features supported by particular font and its layouter.
 
-@section Renderer-usage Usage
+## Usage
 
 Immutable text (e.g. menu items, credits) can be simply rendered using static
 methods, returning result either as data arrays or as fully configured mesh.
@@ -220,7 +220,7 @@ shader.setTransformationProjectionMatrix(projection*Matrix3::translation(-render
 renderer.mesh().draw(shader);
 @endcode
 
-@section Renderer-extensions Required OpenGL functionality
+## Required OpenGL functionality
 
 Mutable text rendering requires @extension{ARB,map_buffer_range} on desktop
 OpenGL (also part of OpenGL ES 3.0). If neither @es_extension{EXT,map_buffer_range}

src/Magnum/Texture.h

@@ -62,7 +62,7 @@ namespace Implementation {
 Template class for one- to three-dimensional textures. See also
 @ref AbstractTexture documentation for more information.
 
-@section Texture-usage Usage
+## Usage
 
 Common usage is to fully configure all texture parameters and then set the
 data from e.g. @ref Image. Example configuration of high quality texture with

src/Magnum/TextureArray.h

@@ -53,7 +53,7 @@ namespace Implementation {
 Template class for one- and two-dimensional texture arrays. See also
 @ref AbstractTexture documentation for more information.
 
-@section TextureArray-usage Usage
+## Usage
 
 See @ref Texture documentation for introduction.
 

src/Magnum/TextureTools/DistanceField.h

@@ -56,6 +56,8 @@ less memory and can be scaled without aliasing issues. Additionally it provides
 foundation for features like outlining, glow or drop shadow essentially for
 free.
 
+### The algorithm
+
 For each pixel inside @p rectangle the algorithm looks at corresponding pixel in
 @p input and tries to find nearest pixel of opposite color in area given by
 @p radius. Signed distance between the points is then saved as value of given
@@ -67,7 +69,7 @@ that the pixel was originally black and nearest white pixel is farther than
 The resulting texture can be used with bilinear filtering. It can be converted
 back to binary form in shader using e.g. GLSL `smoothstep()` function with step
 around `0.5` to create antialiased edges. Or you can exploit the distance field
-features to create many other effects. See also Shaders::DistanceFieldVectorShader.
+features to create many other effects. See also @ref Shaders::DistanceFieldVector.
 
 Based on: *Chris Green - Improved Alpha-Tested Magnification for Vector Textures
 and Special Effects, SIGGRAPH 2007,

src/Magnum/Timeline.h

@@ -42,7 +42,7 @@ namespace Magnum {
 Keeps track of time delta between frames and allows FPS limiting. Can be used
 as source for animation speed computations.
 
-@section Timeline-usage Basic usage
+## Basic usage
 
 Construct the timeline on initialization so the instance is available for
 whole lifetime of the application. Call @ref start() before first draw event is

src/Magnum/Trade/AbstractImageConverter.h

@@ -44,7 +44,7 @@ Provides functionality for converting images between various internal formats
 or compressing them. See @ref plugins for more information and `*ImageConverter`
 classes in @ref Trade namespace for available image converter plugins.
 
-@section AbstractImageConverter-subclassing Subclassing
+## Subclassing
 
 Plugin implements function @ref doFeatures() and one or more of
 @ref doExportToImage(), @ref doExportToData() or @ref doExportToFile()

src/Magnum/Trade/AbstractImporter.h

@@ -47,7 +47,7 @@ Provides interface for importing 2D/3D scene, mesh, material, texture and image
 data. See @ref plugins for more information and `*Importer` classes in
 @ref Trade namespace for available importer plugins.
 
-@section AbstractImporter-subclassing Subclassing
+## Subclassing
 
 Plugin implements function @ref doFeatures(), @ref doIsOpened(), one of or both
 @ref doOpenData() and @ref doOpenFile() functions, function @ref doClose() and