diff --git a/include/SDL3/SDL_haptic.h b/include/SDL3/SDL_haptic.h
index 95446fe2b7..dfd2a699a0 100644
--- a/include/SDL3/SDL_haptic.h
+++ b/include/SDL3/SDL_haptic.h
@@ -139,15 +139,14 @@ extern "C" {
  */
 
 /**
- *  \typedef SDL_Haptic
+ * The haptic structure used to identify an SDL haptic.
  *
- *  The haptic structure used to identify an SDL haptic.
+ * \sa SDL_OpenHaptic
+ * \sa SDL_OpenHapticFromJoystick
+ * \sa SDL_CloseHaptic
  *
- *  \sa SDL_OpenHaptic
- *  \sa SDL_OpenHapticFromJoystick
- *  \sa SDL_CloseHaptic
+ * \since This struct is available since SDL 3.0.0.
  */
-struct SDL_Haptic;
 typedef struct SDL_Haptic SDL_Haptic;
 
 
diff --git a/include/SDL3/SDL_pen.h b/include/SDL3/SDL_pen.h
index 6c495c34d8..2babed902a 100644
--- a/include/SDL3/SDL_pen.h
+++ b/include/SDL3/SDL_pen.h
@@ -112,4 +112,3 @@ typedef enum SDL_PenAxis
 
 #endif /* SDL_pen_h_ */
 
-/* vi: set ts=4 sw=4 expandtab: */
diff --git a/include/SDL3/SDL_pixels.h b/include/SDL3/SDL_pixels.h
index 22813ff5af..95b432283e 100644
--- a/include/SDL3/SDL_pixels.h
+++ b/include/SDL3/SDL_pixels.h
@@ -74,7 +74,11 @@ extern "C" {
  */
 #define SDL_ALPHA_TRANSPARENT_FLOAT 0.0f
 
-/** Pixel type. */
+/**
+ * Pixel type.
+ *
+ * \since This enum is available since SDL 3.0.0.
+ */
 typedef enum SDL_PixelType
 {
     SDL_PIXELTYPE_UNKNOWN,
@@ -93,7 +97,11 @@ typedef enum SDL_PixelType
     SDL_PIXELTYPE_INDEX2
 } SDL_PixelType;
 
-/** Bitmap pixel order, high bit -> low bit. */
+/**
+ * Bitmap pixel order, high bit -> low bit.
+ *
+ * \since This enum is available since SDL 3.0.0.
+ */
 typedef enum SDL_BitmapOrder
 {
     SDL_BITMAPORDER_NONE,
@@ -101,7 +109,11 @@ typedef enum SDL_BitmapOrder
     SDL_BITMAPORDER_1234
 } SDL_BitmapOrder;
 
-/** Packed component order, high bit -> low bit. */
+/**
+ * Packed component order, high bit -> low bit.
+ *
+ * \since This enum is available since SDL 3.0.0.
+ */
 typedef enum SDL_PackedOrder
 {
     SDL_PACKEDORDER_NONE,
@@ -115,7 +127,11 @@ typedef enum SDL_PackedOrder
     SDL_PACKEDORDER_BGRA
 } SDL_PackedOrder;
 
-/** Array component order, low byte -> high byte. */
+/**
+ * Array component order, low byte -> high byte.
+ *
+ * \since This enum is available since SDL 3.0.0.
+ */
 typedef enum SDL_ArrayOrder
 {
     SDL_ARRAYORDER_NONE,
@@ -127,7 +143,11 @@ typedef enum SDL_ArrayOrder
     SDL_ARRAYORDER_ABGR
 } SDL_ArrayOrder;
 
-/** Packed component layout. */
+/**
+ * Packed component layout.
+ *
+ * \since This enum is available since SDL 3.0.0.
+ */
 typedef enum SDL_PackedLayout
 {
     SDL_PACKEDLAYOUT_NONE,
diff --git a/include/SDL3/SDL_sensor.h b/include/SDL3/SDL_sensor.h
index 3ae48566f0..1500f23e29 100644
--- a/include/SDL3/SDL_sensor.h
+++ b/include/SDL3/SDL_sensor.h
@@ -23,6 +23,10 @@
  * # CategorySensor
  *
  * SDL sensor management.
+ *
+ * In order to use these functions, SDL_Init() must have been called
+ * with the SDL_INIT_SENSOR flag.  This causes SDL to scan the system
+ * for sensors, and load appropriate drivers.
  */
 
 #ifndef SDL_sensor_h_
@@ -40,15 +44,6 @@ extern "C" {
 /* *INDENT-ON* */
 #endif
 
-/**
- *  SDL_sensor.h
- *
- *  In order to use these functions, SDL_Init() must have been called
- *  with the SDL_INIT_SENSOR flag.  This causes SDL to scan the system
- *  for sensors, and load appropriate drivers.
- */
-
-struct SDL_Sensor;
 typedef struct SDL_Sensor SDL_Sensor;
 
 /**
diff --git a/include/SDL3/SDL_video.h b/include/SDL3/SDL_video.h
index 27f9fddaba..33d784af9e 100644
--- a/include/SDL3/SDL_video.h
+++ b/include/SDL3/SDL_video.h
@@ -2217,7 +2217,7 @@ extern SDL_DECLSPEC SDL_bool SDLCALL SDL_SetWindowOpacity(SDL_Window *window, fl
  */
 extern SDL_DECLSPEC float SDLCALL SDL_GetWindowOpacity(SDL_Window *window);
 
- /**
+/**
  * Set the window as a child of a parent window.
  *
  * If the window is already the child of an existing window, it will be reparented
@@ -2240,7 +2240,7 @@ extern SDL_DECLSPEC float SDLCALL SDL_GetWindowOpacity(SDL_Window *window);
  *
  * \sa SDL_SetWindowModal
  */
- extern SDL_DECLSPEC SDL_bool SDLCALL SDL_SetWindowParent(SDL_Window *window, SDL_Window *parent);
+extern SDL_DECLSPEC SDL_bool SDLCALL SDL_SetWindowParent(SDL_Window *window, SDL_Window *parent);
 
 /**
  * Toggle the state of the window as modal.