diff --git a/src/servers/app/Desktop.cpp b/src/servers/app/Desktop.cpp
index 12751e6389..5d60f7a706 100644
--- a/src/servers/app/Desktop.cpp
+++ b/src/servers/app/Desktop.cpp
@@ -3210,9 +3210,9 @@ Desktop::_HideWindow(Window* window)
 
 
 /*!	Updates the workspaces of all subset windows with regard to the
-	specifed window.
+	specified window.
 	If newIndex is not -1, it will move all subset windows that belong to
-	the specifed window to the new workspace; this form is only called by
+	the specified window to the new workspace; this form is only called by
 	SetWorkspace().
 */
 void
@@ -3498,7 +3498,7 @@ Desktop::_TriggerWindowRedrawing(BRegion& dirtyRegion, BRegion& exposeRegion)
 void
 Desktop::_SetBackground(BRegion& background)
 {
-	// NOTE: the drawing operation is caried out
+	// NOTE: the drawing operation is carried out
 	// in the clipping region rebuild, but it is
 	// ok actually, because it also avoids trails on
 	// moving windows
diff --git a/src/servers/app/DrawState.cpp b/src/servers/app/DrawState.cpp
index a596a60385..96c9a08dee 100644
--- a/src/servers/app/DrawState.cpp
+++ b/src/servers/app/DrawState.cpp
@@ -380,7 +380,7 @@ DrawState::SetTransform(BAffineTransform transform)
 
 
 /* Can be used to temporarily disable all BAffineTransforms in the state
-   stack, and later reenable them.
+   stack, and later re-enable them.
 */
 void
 DrawState::SetTransformEnabled(bool enabled)
diff --git a/src/servers/app/EventDispatcher.cpp b/src/servers/app/EventDispatcher.cpp
index 36c521f456..4e129f24a2 100644
--- a/src/servers/app/EventDispatcher.cpp
+++ b/src/servers/app/EventDispatcher.cpp
@@ -356,7 +356,7 @@ EventDispatcher::RemoveTarget(EventTarget& target)
 	\brief Adds the specified listener or updates its event mask and options
 		if already added.
 
-	It follows the BView semantics in that specifiying an event mask of zero
+	It follows the BView semantics in that specifying an event mask of zero
 	leaves the event mask untouched and just updates the options.
 */
 bool
@@ -900,7 +900,7 @@ EventDispatcher::_EventLoop()
 
 				if (fFocus != NULL && _AddTokens(event, fFocus,
 						B_KEYBOARD_EVENTS)) {
-					// if tokens were added, we need to explicetly suspend
+					// if tokens were added, we need to explicitly suspend
 					// focus in the event - if not, the event is simply not
 					// forwarded to the target
 					addedTokens = true;
diff --git a/src/servers/app/MultiLocker.cpp b/src/servers/app/MultiLocker.cpp
index f7f5533859..d57972e938 100644
--- a/src/servers/app/MultiLocker.cpp
+++ b/src/servers/app/MultiLocker.cpp
@@ -367,9 +367,9 @@ MultiLocker::IsReadLocked() const
 /* can be uniquely mapped to a slot in the array by performing: */
 /* 		thread_id % max_threads */
 /* each time ReadLock is called while in debug mode the thread_id	*/
-/* is retrived in register_thread() and the count is adjusted in the */
+/* is retrieved in register_thread() and the count is adjusted in the */
 /* array.  If register thread is ever called and the count is not 0 then */
-/* an illegal, potentially deadlocking nested ReadLock occured */
+/* an illegal, potentially deadlocking nested ReadLock occurred */
 /* unregister_thread clears the appropriate slot in the array */
 
 /* this system could be expanded or retracted to include multiple arrays of information */
diff --git a/src/servers/app/OffscreenServerWindow.cpp b/src/servers/app/OffscreenServerWindow.cpp
index f4b2426ddc..2af5a31dee 100644
--- a/src/servers/app/OffscreenServerWindow.cpp
+++ b/src/servers/app/OffscreenServerWindow.cpp
@@ -32,7 +32,7 @@ OffscreenServerWindow::SendMessageToClient(const BMessage* msg, int32 target,
 	bool usePreferred) const
 {
 	// We're a special kind of window. The client BWindow thread is not running,
-	// so we cannot post messages to the client. In order to not mess arround
+	// so we cannot post messages to the client. In order to not mess around
 	// with all the other code, we simply make this function virtual and
 	// don't do anything in this implementation.
 }
diff --git a/src/servers/app/PictureBoundingBoxPlayer.cpp b/src/servers/app/PictureBoundingBoxPlayer.cpp
index b0ef8ca686..f6164eb45a 100644
--- a/src/servers/app/PictureBoundingBoxPlayer.cpp
+++ b/src/servers/app/PictureBoundingBoxPlayer.cpp
@@ -177,7 +177,7 @@ public:
 	virtual void SetPenSize(float size);
 	virtual void SetForeColor(const rgb_color& color);
 	virtual void SetBackColor(const rgb_color& color);
-	virtual void SetStipplePattern(const pattern& patter);
+	virtual void SetStipplePattern(const pattern& pattern);
 	virtual void SetScale(float scale);
 	virtual void SetFontFamily(const char* familyName, size_t length);
 	virtual void SetFontStyle(const char* styleName, size_t length);
@@ -492,7 +492,7 @@ BoundingBoxCallbacks::DrawPicture(const BPoint& where, int32 token)
 void
 BoundingBoxCallbacks::SetClippingRects(size_t numRects, const clipping_rect rects[])
 {
-	TRACE_BB("%p cliping rects (%ld rects)\n", fState, numRects);
+	TRACE_BB("%p clipping rects (%ld rects)\n", fState, numRects);
 
 	// TODO
 	(void)rects;
diff --git a/src/servers/app/RGBColor.cpp b/src/servers/app/RGBColor.cpp
index 95761ea2d5..464db671c3 100644
--- a/src/servers/app/RGBColor.cpp
+++ b/src/servers/app/RGBColor.cpp
@@ -211,7 +211,7 @@ RGBColor::RGBColor(uint8 color)
 
 
 /*!
-	\brief Copy Contructor
+	\brief Copy Constructor
 	\param color color to initialize from
 */
 RGBColor::RGBColor(const RGBColor &color)
@@ -439,7 +439,7 @@ RGBColor::PrintToStream(void) const
 
 
 /*!
-	\brief Overloaded comaparison
+	\brief Overloaded comparison
 	\return true if all color elements are exactly equal
 */
 bool
@@ -453,7 +453,7 @@ RGBColor::operator==(const rgb_color &color) const
 
 
 /*!
-	\brief Overloaded comaparison
+	\brief Overloaded comparison
 	\return true if all color elements are exactly equal
 */
 bool
diff --git a/src/servers/app/ServerApp.cpp b/src/servers/app/ServerApp.cpp
index 8981e3c0b2..2932da5d52 100644
--- a/src/servers/app/ServerApp.cpp
+++ b/src/servers/app/ServerApp.cpp
@@ -337,7 +337,7 @@ ServerApp::InWorkspace(int32 index) const
 	BAutolock locker(fWindowListLock);
 
 	// we could cache this, but then we'd have to recompute the cached
-	// value everytime a window has closed or changed workspaces
+	// value every time a window has closed or changed workspaces
 
 	// TODO: support initial application workspace!
 
@@ -367,7 +367,7 @@ ServerApp::Workspaces() const
 	BAutolock locker(fWindowListLock);
 
 	// we could cache this, but then we'd have to recompute the cached
-	// value everytime a window has closed or changed workspaces
+	// value every time a window has closed or changed workspaces
 
 	for (int32 i = fWindowList.CountItems(); i-- > 0;) {
 		ServerWindow* serverWindow = fWindowList.ItemAt(i);
@@ -577,7 +577,7 @@ ServerApp::_DispatchMessage(int32 code, BPrivate::LinkReceiver& link)
 			port_id clientReplyPort = -1;
 			status_t status = _CreateWindow(code, link, clientReplyPort);
 
-			// if sucessful, ServerWindow::Run() will already have replied
+			// if successful, ServerWindow::Run() will already have replied
 			if (status < B_OK) {
 				// window creation failed, we need to notify the client
 				BPrivate::LinkSender reply(clientReplyPort);
diff --git a/src/servers/app/ServerCursor.cpp b/src/servers/app/ServerCursor.cpp
index 8fc9199ca8..9a146a98f3 100644
--- a/src/servers/app/ServerCursor.cpp
+++ b/src/servers/app/ServerCursor.cpp
@@ -14,7 +14,7 @@
 	attached to a CursorManager, you can delete cursors like any other object.
 
 	Unlike BeOS, cursors can be any size or color space, and this class
-	accomodates and expands the BeOS API.
+	accommodates and expands the BeOS API.
 */
 
 
diff --git a/src/servers/app/ServerFont.cpp b/src/servers/app/ServerFont.cpp
index 874656b184..70542b991d 100644
--- a/src/servers/app/ServerFont.cpp
+++ b/src/servers/app/ServerFont.cpp
@@ -414,7 +414,7 @@ ServerFont::GetTransformedFace(bool rotate, bool shear) const
 		smatrix.yx = (FT_Fixed)(0);
 		smatrix.yy = (FT_Fixed)(0x10000);
 
-		// Multiply togheter and apply transform
+		// Multiply together and apply transform
 		FT_Matrix_Multiply(&rmatrix, &smatrix);
 		FT_Set_Transform(face, &smatrix, NULL);
 	}
@@ -565,7 +565,7 @@ ParseFcMap(FcChar32 charMap[], FcChar32 baseCodePoint, unicode_block& blocksForM
 				while (startBlock <= endBlock) {
 					// if the starting codepoint is found in a different block
 					// than the ending codepoint, we should add all the blocks
-					// inbetween.
+					// in between.
 					blocksForMap = blocksForMap
 						| kUnicodeBlockMap[startBlock].block;
 					++startBlock;
@@ -595,7 +595,7 @@ ParseFcMap(FcChar32 charMap[], FcChar32 baseCodePoint, unicode_block& blocksForM
 			while (startBlock <= endBlock) {
 				// if the starting codepoint is found in a different block
 				// than the ending codepoint, we should add all the blocks
-				// inbetween.
+				// in between.
 				blocksForMap = blocksForMap
 					| kUnicodeBlockMap[startBlock].block;
 				++startBlock;
diff --git a/src/servers/app/ServerPicture.cpp b/src/servers/app/ServerPicture.cpp
index 14ab0f2901..09b9f2889a 100644
--- a/src/servers/app/ServerPicture.cpp
+++ b/src/servers/app/ServerPicture.cpp
@@ -271,7 +271,7 @@ public:
 	virtual void SetPenSize(float size);
 	virtual void SetForeColor(const rgb_color& color);
 	virtual void SetBackColor(const rgb_color& color);
-	virtual void SetStipplePattern(const pattern& patter);
+	virtual void SetStipplePattern(const pattern& pattern);
 	virtual void SetScale(float scale);
 	virtual void SetFontFamily(const char* familyName, size_t length);
 	virtual void SetFontStyle(const char* styleName, size_t length);
diff --git a/src/servers/app/View.cpp b/src/servers/app/View.cpp
index 17724f8b6a..ace973d355 100644
--- a/src/servers/app/View.cpp
+++ b/src/servers/app/View.cpp
@@ -332,7 +332,7 @@ View::RemoveChild(View* view)
 View*
 View::TopView()
 {
-	// returns the top level view of the hirarchy,
+	// returns the top level view of the hierarchy,
 	// it doesn't have to be the top level of a window
 
 	if (fParent)
@@ -819,7 +819,7 @@ View::ScrollBy(int32 x, int32 y, BRegion* dirtyRegion)
 	fWindow->RecycleRegion(dirty);
 
 	// the screen clipping of this view and it's
-	// childs is no longer valid
+	// children is no longer valid
 	InvalidateScreenClipping();
 	RebuildClipping(false);
 }
@@ -871,9 +871,9 @@ View::CopyBits(IntRect src, IntRect dst, BRegion& windowContentClipping)
 	// move src rect to destination here for efficiency reasons
 	visibleSrc.OffsetBy(xOffset, yOffset);
 
-	// we need to interstect the copyRegion two times, onces
+	// we need to interstect the copyRegion two times, once
 	// at the source and once at the destination (here done
-	// the other way arround but it doesn't matter)
+	// the other way around but it doesn't matter)
 	// the reason for this is that we are not supposed to visually
 	// copy children in the source rect and neither to copy onto
 	// children in the destination rect...
@@ -974,7 +974,7 @@ View::PushState()
 	fDrawState.SetTo(newState);
 	// In BeAPI, B_SUBPIXEL_PRECISE is a view flag, and not affected by the
 	// view state. Our implementation moves it to the draw state, but let's
-	// be compatible with the API here and make it survive accross state
+	// be compatible with the API here and make it survive across state
 	// changes.
 	fDrawState->SetSubPixelPrecise(fFlags & B_SUBPIXEL_PRECISE);
 }
@@ -1451,7 +1451,7 @@ View::ScreenAndUserClipping(const BRegion* windowContentClipping, bool force) co
 void
 View::InvalidateScreenClipping()
 {
-// TODO: appearantly, we are calling ScreenClipping() on
+// TODO: apparently, we are calling ScreenClipping() on
 // views who's parents don't have a valid screen clipping yet,
 // this messes up the logic that for any given view with
 // fScreenClippingValid == false, all children have
@@ -1469,7 +1469,7 @@ View::InvalidateScreenClipping()
 
 	fScreenAndUserClipping.SetTo(NULL);
 	fScreenClippingValid = false;
-	// invalidate the childrens screen clipping as well
+	// invalidate the children's screen clipping as well
 	for (View* child = FirstChild(); child; child = child->NextSibling()) {
 		child->InvalidateScreenClipping();
 	}
@@ -1511,7 +1511,7 @@ View::_MoveScreenClipping(int32 x, int32 y, bool deep)
 	}
 
 	if (deep) {
-		// move the childrens screen clipping as well
+		// move the children's screen clipping as well
 		for (View* child = FirstChild(); child; child = child->NextSibling()) {
 			child->_MoveScreenClipping(x, y, deep);
 		}
diff --git a/src/servers/app/Window.cpp b/src/servers/app/Window.cpp
index 85609c4e41..3689dfdca3 100644
--- a/src/servers/app/Window.cpp
+++ b/src/servers/app/Window.cpp
@@ -562,7 +562,7 @@ Window::SetTopView(View* topView)
 
 	if (fTopView.IsSet()) {
 		// the top view is special, it has a coordinate system
-		// as if it was attached directly to the desktop, therefor,
+		// as if it was attached directly to the desktop, therefore,
 		// the coordinate conversion through the view tree works
 		// as expected, since the top view has no "parent" but has
 		// fFrame as if it had
@@ -720,7 +720,7 @@ Window::GetEffectiveDrawingRegion(View* view, BRegion& region)
 	// TODO: this is a region that needs to be cached later in the server
 	// when the current view in ServerWindow is set, and we are currently
 	// in an update (fInUpdate), than we can set this region and remember
-	// it for the comming drawing commands until the current view changes
+	// it for the coming drawing commands until the current view changes
 	// again or fEffectiveDrawingRegionValid is suddenly false.
 	region = fEffectiveDrawingRegion;
 	if (!fContentRegionValid)
@@ -1295,9 +1295,9 @@ Window::SetLook(window_look look, BRegion* updateRegion)
 	fLook = look;
 
 	fContentRegionValid = false;
-		// mabye a resize handle was added...
+		// maybe a resize handle was added...
 	fEffectiveDrawingRegionValid = false;
-		// ...and therefor the drawing region is
+		// ...and therefore the drawing region is
 		// likely not valid anymore either
 
 	if (!fCurrentStack.IsSet())
@@ -1888,7 +1888,7 @@ Window::BeginUpdate(BPrivate::PortLink& link)
 	// NOTE: since we might "shift" parts of the
 	// internal dirty regions from the desktop thread
 	// in response to Window::ResizeBy(), which
-	// might move arround views, the user of this function
+	// might move around views, the user of this function
 	// needs to hold the global clipping lock so that the internal
 	// dirty regions are not messed with from the Desktop thread
 	// and ServerWindow thread at the same time.
@@ -1954,7 +1954,7 @@ Window::BeginUpdate(BPrivate::PortLink& link)
 	link.Attach<int32>(B_NULL_TOKEN);
 	link.Flush();
 
-	// supress back to front buffer copies in the drawing engine
+	// suppress back to front buffer copies in the drawing engine
 	fDrawingEngine->SetCopyToFrontEnabled(false);
 
 	if (fDrawingEngine->LockParallelAccess()) {
@@ -1973,7 +1973,7 @@ Window::EndUpdate()
 	// NOTE: see comment in _BeginUpdate()
 
 	if (fInUpdate) {
-		// reenable copy to front
+		// re-enable copy to front
 		fDrawingEngine->SetCopyToFrontEnabled(true);
 
 		BRegion* dirty = fRegionPool.GetRegion(
@@ -2031,7 +2031,7 @@ Window::_ObeySizeLimits()
 	// BWindow::ResizeTo() even honors the limits, I would guess
 	// this is a bug that we don't have to adopt.
 	// Note that most current apps will do unnecessary resizing
-	// after having set the limits, but the overhead is neglible.
+	// after having set the limits, but the overhead is negligible.
 
 	float minWidthDiff = fMinWidth - fFrame.Width();
 	float minHeightDiff = fMinHeight - fFrame.Height();
diff --git a/src/servers/app/Window.h b/src/servers/app/Window.h
index 911e5ba51b..1f2a329eb0 100644
--- a/src/servers/app/Window.h
+++ b/src/servers/app/Window.h
@@ -118,7 +118,7 @@ public:
 	inline	BRegion&			VisibleRegion() { return fVisibleRegion; }
 			BRegion&			VisibleContentRegion();
 
-			// TODO: not protected by a lock, but noone should need this anyways
+			// TODO: not protected by a lock, but no one should need this anyways
 			// make private? when used inside Window, it has the ReadLock()
 			void				GetFullRegion(BRegion* region);
 			void				GetBorderRegion(BRegion* region);
diff --git a/src/servers/app/decorator/TabDecorator.cpp b/src/servers/app/decorator/TabDecorator.cpp
index 68160e4f1b..544ac51803 100644
--- a/src/servers/app/decorator/TabDecorator.cpp
+++ b/src/servers/app/decorator/TabDecorator.cpp
@@ -999,7 +999,7 @@ TabDecorator::_LayoutTabItems(Decorator::Tab* _tab, const BRect& tabRect)
 	BRect& closeRect = tab->closeRect;
 	BRect& zoomRect = tab->zoomRect;
 
-	// calulate close rect based on the tab rectangle
+	// calculate close rect based on the tab rectangle
 	if (tab->look != kLeftTitledWindowLook) {
 		closeRect.Set(tabRect.left + offset, tabRect.top + offset,
 			tabRect.left + offset + size, tabRect.top + offset + size);
diff --git a/src/servers/app/drawing/BitmapBuffer.cpp b/src/servers/app/drawing/BitmapBuffer.cpp
index 994e3a51e1..461cc10941 100644
--- a/src/servers/app/drawing/BitmapBuffer.cpp
+++ b/src/servers/app/drawing/BitmapBuffer.cpp
@@ -6,7 +6,7 @@
 
 // TODO: It should be more or less guaranteed that this object
 // is not used if InitCheck() returns an error, so the checks
-// in all thos functions should probably be removed...
+// in all those functions should probably be removed...
 
 // constructor
 BitmapBuffer::BitmapBuffer(ServerBitmap* bitmap)
diff --git a/src/servers/app/drawing/DrawingEngine.cpp b/src/servers/app/drawing/DrawingEngine.cpp
index 93847b2941..7dc13d58c6 100644
--- a/src/servers/app/drawing/DrawingEngine.cpp
+++ b/src/servers/app/drawing/DrawingEngine.cpp
@@ -447,7 +447,7 @@ DrawingEngine::SetTransform(const BAffineTransform& transform, int32 xOffset,
 // and bottom of rect C, so that's the one we want to copy first
 // (for positive x and y offsets).
 // Since A is to the left of C and B is to the top of C, The "node"
-// for C will point to the nodes of A and B as its "successors". Therefor,
+// for C will point to the nodes of A and B as its "successors". Therefore,
 // A and B will have an "indegree" of 1 for C pointing to them. C will
 // have an "indegree" of 0, because there was no rect to which C
 // was to the left or top of. When comparing A and B, neither is left
diff --git a/src/servers/app/drawing/HWInterface.h b/src/servers/app/drawing/HWInterface.h
index 06f3f4c06f..65992d56ed 100644
--- a/src/servers/app/drawing/HWInterface.h
+++ b/src/servers/app/drawing/HWInterface.h
@@ -156,7 +156,7 @@ public:
 	// draw the cursor for almost every drawing operation.
 	// It seems to me BeOS hides the cursor (in laymans words) before
 	// BView::Draw() is called (if the cursor is within that views clipping region),
-	// then, after all drawing commands that triggered have been caried out,
+	// then, after all drawing commands that triggered have been carried out,
 	// it shows the cursor again. This approach would have the advantage of
 	// the code not cluttering/slowing down DrawingEngine.
 	// For now, we hide the cursor for any drawing operation that has
diff --git a/src/servers/app/drawing/Painter/AGGTextRenderer.cpp b/src/servers/app/drawing/Painter/AGGTextRenderer.cpp
index beaed38340..a1c0bb26e7 100644
--- a/src/servers/app/drawing/Painter/AGGTextRenderer.cpp
+++ b/src/servers/app/drawing/Painter/AGGTextRenderer.cpp
@@ -98,7 +98,7 @@ AGGTextRenderer::SetAntialiasing(bool antialiasing)
 	if (fAntialias != antialiasing) {
 		fAntialias = antialiasing;
 		// NOTE: The fSubpixRasterizer is not used when anti-aliasing is
-		// disbaled.
+		// disabled.
 		if (!fAntialias)
 			fRasterizer.gamma(agg::gamma_threshold(0.5));
 		else
@@ -196,7 +196,7 @@ public:
 	{
 		// "glyphBounds" is the bounds of the glyph transformed
 		// by the x y location of the glyph along the base line,
-		// it is therefor yet "untransformed" in case there is an
+		// it is therefore yet "untransformed" in case there is an
 		// embedded transformation.
 		const agg::rect_i& r = glyph->bounds;
 		if (!r.is_valid())
diff --git a/src/servers/app/drawing/Painter/NOTES b/src/servers/app/drawing/Painter/NOTES
index 4561f5c0a1..eff89ff24b 100644
--- a/src/servers/app/drawing/Painter/NOTES
+++ b/src/servers/app/drawing/Painter/NOTES
@@ -12,7 +12,7 @@ The BView pen location appears to be integer coords, which spoils the pen locati
 Dest alpha is actually only interesting when drawing into a BBitmap. When drawing into the frame buffer, dest alpha is logically 255, it wouldn't even need to be assigned. Maybe we could save a few CPU cycles if we adjust the DrawingMode classes accordingly. For now, the modes work as expected when drawing into a BBitmap.
 
 
-Current comparision timings:
+Current comparison timings:
 
 drawing_mode:		B_OP_COPY
 pen size:			 1.0
diff --git a/src/servers/app/drawing/Painter/Painter.cpp b/src/servers/app/drawing/Painter/Painter.cpp
index b7a9266215..be3bbe4579 100644
--- a/src/servers/app/drawing/Painter/Painter.cpp
+++ b/src/servers/app/drawing/Painter/Painter.cpp
@@ -260,7 +260,7 @@ Painter::AttachToBuffer(RenderingBuffer* buffer)
 		fValidClipping = fClippingRegion != NULL
 			&& fClippingRegion->Frame().IsValid();
 
-		// These are the AGG renderes and rasterizes which
+		// These are the AGG renders and rasterizes which
 		// will be used for stroking paths
 
 		_SetRendererColor(fPatternHandler.HighColor());
@@ -1710,7 +1710,7 @@ Painter::_UpdateDrawingMode()
 	// DrawingMode*Solid ones) as of now. The PixelFormat knows the
 	// PatternHandler and makes its decision based on the pattern.
 	// When a solid pattern is used, _SetRendererColor()
-	// has to be called so that all internal colors in the renderes
+	// has to be called so that all internal colors in the renderers
 	// are up to date for use by the solid drawing mode version.
 	fPixelFormat.SetDrawingMode(fDrawingMode, fAlphaSrcMode, fAlphaFncMode);
 }
diff --git a/src/servers/app/drawing/Painter/README b/src/servers/app/drawing/Painter/README
index 4faa4baf41..75ed567047 100644
--- a/src/servers/app/drawing/Painter/README
+++ b/src/servers/app/drawing/Painter/README
@@ -16,7 +16,7 @@ Currently, there is a generic fallback bitmap drawing routine that handles all c
 
 3) Article
 
-I have written a Newsletter article, that explains the concepts of AGG, how Painter is therefor designed and how it can be improved with the knowledge of AGG inner workings.
+I have written a Newsletter article, that explains the concepts of AGG, how Painter is therefore designed and how it can be improved with the knowledge of AGG inner workings.
 
 <http://www.haiku-os.org/documents/dev/painter_and_how_agg_works>
 
diff --git a/src/servers/app/drawing/Painter/TODO b/src/servers/app/drawing/Painter/TODO
index ab9c99769a..54f924f03a 100644
--- a/src/servers/app/drawing/Painter/TODO
+++ b/src/servers/app/drawing/Painter/TODO
@@ -1,2 +1,2 @@
-* make more special verions of DrawingModes for B_SOLID_* patterns
+* make more special versions of DrawingModes for B_SOLID_* patterns
 
diff --git a/src/servers/app/drawing/Painter/Transformable.h b/src/servers/app/drawing/Painter/Transformable.h
index ab40ae1728..38c34a6ef0 100644
--- a/src/servers/app/drawing/Painter/Transformable.h
+++ b/src/servers/app/drawing/Painter/Transformable.h
@@ -42,7 +42,7 @@ class Transformable : public BArchivable,
 //			bool				operator==(const Transformable& other) const;
 //			bool				operator!=(const Transformable& other) const;
 
-								// transforms coordiantes
+								// transforms coordinates
 			void				Transform(double* x, double* y) const;
 			void				Transform(BPoint* point) const;
 			BPoint				Transform(const BPoint& point) const;
diff --git a/src/servers/app/drawing/Painter/bitmap_painter/DrawBitmapBilinear.h b/src/servers/app/drawing/Painter/bitmap_painter/DrawBitmapBilinear.h
index b5ee4ca43c..f24570817a 100644
--- a/src/servers/app/drawing/Painter/bitmap_painter/DrawBitmapBilinear.h
+++ b/src/servers/app/drawing/Painter/bitmap_painter/DrawBitmapBilinear.h
@@ -231,7 +231,7 @@ struct BilinearDefault :
 
 	void DrawToClipRect(int32 xIndexL, int32 xIndexR, int32 y1, int32 y2)
 	{
-		// In this mode we anticipate many pixels wich need filtering,
+		// In this mode we anticipate many pixels which need filtering,
 		// there are no special cases for direct hit pixels except for
 		// the last column/row and the right/bottom corner pixel.
 
diff --git a/src/servers/app/drawing/Painter/bitmap_painter/DrawBitmapNearestNeighbor.h b/src/servers/app/drawing/Painter/bitmap_painter/DrawBitmapNearestNeighbor.h
index b25ff76ac9..74f00fb930 100644
--- a/src/servers/app/drawing/Painter/bitmap_painter/DrawBitmapNearestNeighbor.h
+++ b/src/servers/app/drawing/Painter/bitmap_painter/DrawBitmapNearestNeighbor.h
@@ -109,7 +109,7 @@ struct DrawBitmapNearestNeighborCopy {
 			// buffer offset into destination
 			uint8* dst = aggInterface.fBuffer.row_ptr(y1) + x1 * 4;
 
-			// x and y are needed as indeces into the wheight arrays, so the
+			// x and y are needed as indices into the weight arrays, so the
 			// offset into the target buffer needs to be compensated
 			const int32 xIndexL = x1 - left - filterWeightXIndexOffset;
 			const int32 xIndexR = x2 - left - filterWeightXIndexOffset;
diff --git a/src/servers/app/drawing/Painter/bitmap_painter/painter_bilinear_scale.nasm b/src/servers/app/drawing/Painter/bitmap_painter/painter_bilinear_scale.nasm
index b80a278793..5d1df94c00 100644
--- a/src/servers/app/drawing/Painter/bitmap_painter/painter_bilinear_scale.nasm
+++ b/src/servers/app/drawing/Painter/bitmap_painter/painter_bilinear_scale.nasm
@@ -152,7 +152,7 @@ bilinear_scale_xloop_mmxsse:
 	mov		eax, [ebp + PAR_xmin]	; loop counter
 	mov		edx, [ebp + PAR_xWeightPtr]	; xWeights array
 	mov		esi, [ebp + PAR_srcPtr]		; source bitmap
-	mov		edi, [ebp + PAR_dstPtr]		; desination bitmap
+	mov		edi, [ebp + PAR_dstPtr]		; destination bitmap
 	movq	mm6, [c4x16UW_129_LShift8]
 	movq	mm7, [c2x32UD_ff000000]
 
diff --git a/src/servers/app/drawing/drawing_support.cpp b/src/servers/app/drawing/drawing_support.cpp
index f69878b8f4..03d3a4d846 100644
--- a/src/servers/app/drawing/drawing_support.cpp
+++ b/src/servers/app/drawing/drawing_support.cpp
@@ -5,7 +5,7 @@
 void
 align_rect_to_pixels(BRect* rect)
 {
-	// round the rect with the least ammount of distortion
+	// round the rect with the least amount of distortion
 	rect->OffsetTo(roundf(rect->left), roundf(rect->top));
 	rect->right = roundf(rect->right);
 	rect->bottom = roundf(rect->bottom);
diff --git a/src/servers/app/drawing/interface/local/AccelerantHWInterface.cpp b/src/servers/app/drawing/interface/local/AccelerantHWInterface.cpp
index 5ac893e733..53dadb7a94 100644
--- a/src/servers/app/drawing/interface/local/AccelerantHWInterface.cpp
+++ b/src/servers/app/drawing/interface/local/AccelerantHWInterface.cpp
@@ -634,7 +634,7 @@ AccelerantHWInterface::SetMode(const display_mode& mode)
 
 	_UpdateHooksAfterModeChange();
 
-	// update backbuffer if neccessary
+	// update backbuffer if necessary
 	if (!fBackBuffer.IsSet()
 		|| fBackBuffer->Width() != fFrontBuffer->Width()
 		|| fBackBuffer->Height() != fFrontBuffer->Height()
@@ -1421,8 +1421,8 @@ AccelerantHWInterface::_RegionToRectParams(/*const*/ BRegion* region,
 uint32
 AccelerantHWInterface::_NativeColor(const rgb_color& color) const
 {
-	// NOTE: This functions looks somehow suspicios to me.
-	// It assumes that all graphics cards have the same native endianess, no?
+	// NOTE: This functions looks somehow suspicious to me.
+	// It assumes that all graphics cards have the same native endianness, no?
 	switch (fDisplayMode.space) {
 		case B_CMAP8:
 		case B_GRAY8:
diff --git a/src/servers/app/drawing/interface/virtual/DWindowHWInterface.cpp b/src/servers/app/drawing/interface/virtual/DWindowHWInterface.cpp
index 9baee53338..8efc40c830 100644
--- a/src/servers/app/drawing/interface/virtual/DWindowHWInterface.cpp
+++ b/src/servers/app/drawing/interface/virtual/DWindowHWInterface.cpp
@@ -834,7 +834,7 @@ DWindowHWInterface::ProposeMode(display_mode* candidate,
 {
 	// We should be able to get away with this because we're not dealing with
 	// any specific hardware. This is a Good Thing(TM) because we can support
-	// any hardware we wish within reasonable expectaions and programmer
+	// any hardware we wish within reasonable expectations and programmer
 	// laziness. :P
 	return B_OK;
 }
diff --git a/src/servers/app/drawing/interface/virtual/ViewHWInterface.cpp b/src/servers/app/drawing/interface/virtual/ViewHWInterface.cpp
index 6a4c861f6e..5aa3e9eb9d 100644
--- a/src/servers/app/drawing/interface/virtual/ViewHWInterface.cpp
+++ b/src/servers/app/drawing/interface/virtual/ViewHWInterface.cpp
@@ -688,7 +688,7 @@ ViewHWInterface::ProposeMode(display_mode* candidate, const display_mode* low,
 {
 	// We should be able to get away with this because we're not dealing with
 	// any specific hardware. This is a Good Thing(TM) because we can support
-	// any hardware we wish within reasonable expectaions and programmer
+	// any hardware we wish within reasonable expectations and programmer
 	// laziness. :P
 	return B_OK;
 }
diff --git a/src/servers/app/font/FontStyle.h b/src/servers/app/font/FontStyle.h
index 552648e4ed..207e74287a 100644
--- a/src/servers/app/font/FontStyle.h
+++ b/src/servers/app/font/FontStyle.h
@@ -121,7 +121,7 @@ class FontStyle : public BReferenceable {
 		const char*		Path() const;
 		void			UpdatePath(const node_ref& parentNodeRef);
 
-		void			GetHeight(float size, font_height &heigth) const;
+		void			GetHeight(float size, font_height &height) const;
 		font_direction	Direction() const
 							{ return B_FONT_LEFT_TO_RIGHT; }
 		font_file_format FileFormat() const