diff --git a/src/AnnouncerManager.cpp b/src/AnnouncerManager.cpp
index 88ef40dc27..1c815f79eb 100644
--- a/src/AnnouncerManager.cpp
+++ b/src/AnnouncerManager.cpp
@@ -5,7 +5,7 @@
 #include "RageFile.h"
 #include <cstring>
 
-AnnouncerManager*	ANNOUNCER = NULL;	// global object accessable from anywhere in the program
+AnnouncerManager*	ANNOUNCER = NULL; // global and accessible from anywhere in our program
 
 
 const RString EMPTY_ANNOUNCER_NAME = "Empty";
diff --git a/src/AnnouncerManager.h b/src/AnnouncerManager.h
index 8d4e9f05c5..645acbff55 100644
--- a/src/AnnouncerManager.h
+++ b/src/AnnouncerManager.h
@@ -42,7 +42,7 @@ protected:
 };
 
 
-extern AnnouncerManager*	ANNOUNCER;	// global and accessable from anywhere in our program
+extern AnnouncerManager*	ANNOUNCER;	// global and accessible from anywhere in our program
 	
 #endif
 
diff --git a/src/BannerCache.cpp b/src/BannerCache.cpp
index da1ae51c17..e17f4579d4 100644
--- a/src/BannerCache.cpp
+++ b/src/BannerCache.cpp
@@ -47,7 +47,7 @@ static Preference<bool> g_bPalettedBannerCache( "PalettedBannerCache", false );
  * CacheBanner to avoid doing extra work.
  */
 
-BannerCache *BANNERCACHE;
+BannerCache *BANNERCACHE; // global and accessible from anywhere in our program
 
 
 static map<RString,RageSurface *> g_BannerPathToImage;
diff --git a/src/BannerCache.h b/src/BannerCache.h
index ad3323818b..aa04b6adfc 100644
--- a/src/BannerCache.h
+++ b/src/BannerCache.h
@@ -31,7 +31,7 @@ private:
 	IniFile BannerData;
 };
 
-extern BannerCache *BANNERCACHE; // global and accessable from anywhere in our program
+extern BannerCache *BANNERCACHE; // global and accessible from anywhere in our program
 
 #endif
 
diff --git a/src/Bookkeeper.cpp b/src/Bookkeeper.cpp
index e1137f52f5..39c5846e85 100644
--- a/src/Bookkeeper.cpp
+++ b/src/Bookkeeper.cpp
@@ -10,7 +10,7 @@
 #include "XmlFileUtil.h"
 #include <ctime>
 
-Bookkeeper*	BOOKKEEPER = NULL;	// global and accessable from anywhere in our program
+Bookkeeper*	BOOKKEEPER = NULL;	// global and accessible from anywhere in our program
 
 static const RString COINS_DAT = "Save/Coins.xml";
 
diff --git a/src/Bookkeeper.h b/src/Bookkeeper.h
index cddef0b9f6..5b9cc5c0fa 100644
--- a/src/Bookkeeper.h
+++ b/src/Bookkeeper.h
@@ -61,7 +61,7 @@ private:
 	map<Date,int> m_mapCoinsForHour;
 };
 
-extern Bookkeeper*	BOOKKEEPER;	// global and accessable from anywhere in our program
+extern Bookkeeper*	BOOKKEEPER;	// global and accessible from anywhere in our program
 
 #endif
 
diff --git a/src/CharacterManager.cpp b/src/CharacterManager.cpp
index 8b70d9139f..03df847012 100644
--- a/src/CharacterManager.cpp
+++ b/src/CharacterManager.cpp
@@ -7,7 +7,7 @@
 
 #define CHARACTERS_DIR "/Characters/"
 
-CharacterManager*	CHARMAN = NULL;	// global object accessable from anywhere in the program
+CharacterManager*	CHARMAN = NULL;	// global object accessible from anywhere in the program
 
 CharacterManager::CharacterManager()
 {
diff --git a/src/CharacterManager.h b/src/CharacterManager.h
index 4a687ee9d3..1f8bfe0567 100644
--- a/src/CharacterManager.h
+++ b/src/CharacterManager.h
@@ -34,7 +34,7 @@ private:
 };
 
 
-extern CharacterManager*	CHARMAN;	// global and accessable from anywhere in our program
+extern CharacterManager*	CHARMAN;	// global and accessible from anywhere in our program
 	
 #endif
 
diff --git a/src/CryptManager.cpp b/src/CryptManager.cpp
index 1c2427b7de..2208e986da 100644
--- a/src/CryptManager.cpp
+++ b/src/CryptManager.cpp
@@ -11,7 +11,7 @@
 
 #include "libtomcrypt/src/headers/tomcrypt.h"
 
-CryptManager*	CRYPTMAN	= NULL;	// global and accessable from anywhere in our program
+CryptManager*	CRYPTMAN	= NULL;	// global and accessible from anywhere in our program
 
 static const RString PRIVATE_KEY_PATH = "Data/private.rsa";
 static const RString PUBLIC_KEY_PATH = "Data/public.rsa";
diff --git a/src/CryptManager.h b/src/CryptManager.h
index 64fc747ffb..ee897346d2 100644
--- a/src/CryptManager.h
+++ b/src/CryptManager.h
@@ -35,7 +35,7 @@ public:
 	void PushSelf( lua_State *L );
 };
 
-extern CryptManager*	CRYPTMAN;	// global and accessable from anywhere in our program
+extern CryptManager*	CRYPTMAN;	// global and accessible from anywhere in our program
 
 #endif
 
diff --git a/src/FontManager.cpp b/src/FontManager.cpp
index 42b56ad5ea..a37d9e6685 100644
--- a/src/FontManager.cpp
+++ b/src/FontManager.cpp
@@ -5,7 +5,7 @@
 #include "RageLog.h"
 #include <map>
 
-FontManager*	FONT	= NULL;	// global and accessable from anywhere in our program
+FontManager*	FONT	= NULL;	// global and accessible from anywhere in our program
 
 // map from file name to a texture holder
 typedef pair<RString,RString> FontName;
diff --git a/src/FontManager.h b/src/FontManager.h
index 75655628da..6dbb1a524a 100644
--- a/src/FontManager.h
+++ b/src/FontManager.h
@@ -18,7 +18,7 @@ public:
 	//void PruneFonts();
 };
 
-extern FontManager*	FONT;	// global and accessable from anywhere in our program
+extern FontManager*	FONT;	// global and accessible from anywhere in our program
 
 
 #endif
diff --git a/src/GameManager.cpp b/src/GameManager.cpp
index 56ec3bacf7..68c40e5a76 100644
--- a/src/GameManager.cpp
+++ b/src/GameManager.cpp
@@ -12,7 +12,7 @@
 #include "Style.h"
 #include "Foreach.h"
 
-GameManager*	GAMEMAN = NULL;	// global and accessable from anywhere in our program
+GameManager*	GAMEMAN = NULL;	// global and accessible from anywhere in our program
 
 enum 
 {
diff --git a/src/GameManager.h b/src/GameManager.h
index 0f83b043f0..0fe6ff29ae 100644
--- a/src/GameManager.h
+++ b/src/GameManager.h
@@ -55,7 +55,7 @@ public:
 	void PushSelf( lua_State *L );
 };
 
-extern GameManager*	GAMEMAN;	// global and accessable from anywhere in our program
+extern GameManager*	GAMEMAN;	// global and accessible from anywhere in our program
 
 #endif
 
diff --git a/src/GameState.cpp b/src/GameState.cpp
index ec4301f7c2..cf7c2ebd9b 100644
--- a/src/GameState.cpp
+++ b/src/GameState.cpp
@@ -42,7 +42,7 @@
 #include <ctime>
 #include <set>
 
-GameState*	GAMESTATE = NULL;	// global and accessable from anywhere in our program
+GameState*	GAMESTATE = NULL;	// global and accessible from anywhere in our program
 
 #define NAME_BLACKLIST_FILE "/Data/NamesBlacklist.txt"
 
diff --git a/src/InputFilter.cpp b/src/InputFilter.cpp
index bec28d0dcb..bcf6ae1d0d 100644
--- a/src/InputFilter.cpp
+++ b/src/InputFilter.cpp
@@ -82,7 +82,7 @@ namespace
  * this won't cause timing problems, because the event timestamp is preserved. */
 static Preference<float> g_fInputDebounceTime( "InputDebounceTime", 0 );
 
-InputFilter*	INPUTFILTER = NULL;	// global and accessable from anywhere in our program
+InputFilter*	INPUTFILTER = NULL;	// global and accessible from anywhere in our program
 
 static const float TIME_BEFORE_REPEATS = 0.375f;
 
diff --git a/src/InputFilter.h b/src/InputFilter.h
index a67d33a906..33a5e45d20 100644
--- a/src/InputFilter.h
+++ b/src/InputFilter.h
@@ -92,7 +92,7 @@ private:
 	InputFilter& operator=(const InputFilter& rhs);
 };
 
-extern InputFilter*	INPUTFILTER;	// global and accessable from anywhere in our program
+extern InputFilter*	INPUTFILTER;	// global and accessible from anywhere in our program
 
 #endif
 
diff --git a/src/InputMapper.cpp b/src/InputMapper.cpp
index 1d80e36669..c2bd98106a 100644
--- a/src/InputMapper.cpp
+++ b/src/InputMapper.cpp
@@ -26,7 +26,7 @@ namespace
 	PlayerNumber g_JoinControllers;
 };
 
-InputMapper*	INPUTMAPPER = NULL;	// global and accessable from anywhere in our program
+InputMapper*	INPUTMAPPER = NULL;	// global and accessible from anywhere in our program
 
 InputMapper::InputMapper()
 {
diff --git a/src/InputMapper.h b/src/InputMapper.h
index d09f23c53e..430f0a2015 100644
--- a/src/InputMapper.h
+++ b/src/InputMapper.h
@@ -202,7 +202,7 @@ private:
 	InputMapper& operator=(const InputMapper& rhs);
 };
 
-extern InputMapper*	INPUTMAPPER;	// global and accessable from anywhere in our program
+extern InputMapper*	INPUTMAPPER;	// global and accessible from anywhere in our program
 
 #endif
 
diff --git a/src/InputQueue.cpp b/src/InputQueue.cpp
index 7811cfc5a9..83dfe46f26 100644
--- a/src/InputQueue.cpp
+++ b/src/InputQueue.cpp
@@ -6,7 +6,7 @@
 #include "Foreach.h"
 #include "InputMapper.h"
 
-InputQueue*	INPUTQUEUE = NULL;	// global and accessable from anywhere in our program
+InputQueue*	INPUTQUEUE = NULL;	// global and accessible from anywhere in our program
 
 const unsigned MAX_INPUT_QUEUE_LENGTH = 32;
 
diff --git a/src/InputQueue.h b/src/InputQueue.h
index cb7498470b..88e24df218 100644
--- a/src/InputQueue.h
+++ b/src/InputQueue.h
@@ -52,7 +52,7 @@ private:
 	float m_fMaxSecondsBack;
 };	
 
-extern InputQueue*	INPUTQUEUE;	// global and accessable from anywhere in our program
+extern InputQueue*	INPUTQUEUE;	// global and accessible from anywhere in our program
 
 #endif
 
diff --git a/src/LightsManager.cpp b/src/LightsManager.cpp
index e2d2c4083a..84bad22410 100644
--- a/src/LightsManager.cpp
+++ b/src/LightsManager.cpp
@@ -93,7 +93,7 @@ static void GetUsedGameInputs( vector<GameInput> &vGameInputsOut )
 		vGameInputsOut.push_back( *gi );
 }
 
-LightsManager*	LIGHTSMAN = NULL;	// global and accessable from anywhere in our program
+LightsManager*	LIGHTSMAN = NULL;	// global and accessible from anywhere in our program
 
 LightsManager::LightsManager()
 {
diff --git a/src/LightsManager.h b/src/LightsManager.h
index 6dc05c04f7..19a5889fa6 100644
--- a/src/LightsManager.h
+++ b/src/LightsManager.h
@@ -104,7 +104,7 @@ private:
 	int				m_iControllerTestManualCycleCurrent;
 };
 
-extern LightsManager*	LIGHTSMAN;	// global and accessable from anywhere in our program
+extern LightsManager*	LIGHTSMAN;	// global and accessible from anywhere in our program
 
 #endif
 
diff --git a/src/MemoryCardManager.cpp b/src/MemoryCardManager.cpp
index 6c30e7be0b..079fce2d0b 100644
--- a/src/MemoryCardManager.cpp
+++ b/src/MemoryCardManager.cpp
@@ -13,7 +13,7 @@
 #include "arch/MemoryCard/MemoryCardDriver_Null.h"
 #include "LuaManager.h"
 
-MemoryCardManager*	MEMCARDMAN = NULL;	// global and accessable from anywhere in our program
+MemoryCardManager*	MEMCARDMAN = NULL;	// global and accessible from anywhere in our program
 
 static void MemoryCardOsMountPointInit( size_t /*PlayerNumber*/ i, RString &sNameOut, RString &defaultValueOut )
 {
diff --git a/src/MemoryCardManager.h b/src/MemoryCardManager.h
index 8a2bb4fe0b..0244907638 100644
--- a/src/MemoryCardManager.h
+++ b/src/MemoryCardManager.h
@@ -75,7 +75,7 @@ protected:
 	RageSound m_soundDisconnect;
 };
 
-extern MemoryCardManager*	MEMCARDMAN;	// global and accessable from anywhere in our program
+extern MemoryCardManager*	MEMCARDMAN;	// global and accessible from anywhere in our program
 
 #endif
 
diff --git a/src/MessageManager.cpp b/src/MessageManager.cpp
index 1b08eabff0..6f4ffcda29 100644
--- a/src/MessageManager.cpp
+++ b/src/MessageManager.cpp
@@ -9,7 +9,7 @@
 #include <set>
 #include <map>
 
-MessageManager*	MESSAGEMAN = NULL;	// global and accessable from anywhere in our program
+MessageManager*	MESSAGEMAN = NULL;	// global and accessible from anywhere in our program
 
 
 static const char *MessageIDNames[] = {
diff --git a/src/MessageManager.h b/src/MessageManager.h
index 020868fb4a..a14735cbcb 100644
--- a/src/MessageManager.h
+++ b/src/MessageManager.h
@@ -193,7 +193,7 @@ public:
 	void PushSelf( lua_State *L );
 };
 
-extern MessageManager*	MESSAGEMAN;	// global and accessable from anywhere in our program
+extern MessageManager*	MESSAGEMAN;	// global and accessible from anywhere in our program
 
 template<class T>
 class BroadcastOnChange
diff --git a/src/ModelManager.cpp b/src/ModelManager.cpp
index b054fd2811..f587ee4eb5 100644
--- a/src/ModelManager.cpp
+++ b/src/ModelManager.cpp
@@ -5,7 +5,7 @@
 #include "RageLog.h"
 #include "RageDisplay.h"
 
-ModelManager*		MODELMAN		= NULL;
+ModelManager*		MODELMAN		= NULL; // global and accessible from anywhere in our program
 
 ModelManager::ModelManager()
 {
diff --git a/src/ModelManager.h b/src/ModelManager.h
index 67d10aa67b..34eb992049 100644
--- a/src/ModelManager.h
+++ b/src/ModelManager.h
@@ -52,7 +52,7 @@ protected:
 	ModelManagerPrefs m_Prefs;
 };
 
-extern ModelManager*	MODELMAN;	// global and accessable from anywhere in our program
+extern ModelManager*	MODELMAN;	// global and accessible from anywhere in our program
 
 #endif
 
diff --git a/src/NoteSkinManager.cpp b/src/NoteSkinManager.cpp
index ec67bbaf4f..4661ca2090 100644
--- a/src/NoteSkinManager.cpp
+++ b/src/NoteSkinManager.cpp
@@ -18,7 +18,7 @@
 #include "SpecialFiles.h"
 
 /** @brief Have the NoteSkinManager available throughout the program. */
-NoteSkinManager*	NOTESKIN = NULL;
+NoteSkinManager*	NOTESKIN = NULL; // global and accessible from anywhere in our program
 
 const RString GAME_COMMON_NOTESKIN_NAME = "common";
 const RString GAME_BASE_NOTESKIN_NAME = "default";
diff --git a/src/NoteSkinManager.h b/src/NoteSkinManager.h
index 3917982fb7..c6594e02bc 100644
--- a/src/NoteSkinManager.h
+++ b/src/NoteSkinManager.h
@@ -54,7 +54,7 @@ protected:
 	GameController m_GameController;
 };
 
-extern NoteSkinManager*	NOTESKIN;	// global and accessable from anywhere in our program
+extern NoteSkinManager*	NOTESKIN;	// global and accessible from anywhere in our program
 
 class LockNoteSkin
 {
diff --git a/src/PrefsManager.cpp b/src/PrefsManager.cpp
index 053f6964c7..39fd2faeb2 100644
--- a/src/PrefsManager.cpp
+++ b/src/PrefsManager.cpp
@@ -16,7 +16,7 @@
 //STATIC_INI_PATH	= "Data/Static.ini";		// overlay on the 2 above, can't be overridden
 //TYPE_TXT_FILE	= "Data/Type.txt";
 
-PrefsManager*	PREFSMAN = NULL;	// global and accessable from anywhere in our program
+PrefsManager*	PREFSMAN = NULL;	// global and accessible from anywhere in our program
 
 static const char *MusicWheelUsesSectionsNames[] = {
 	"Never",
diff --git a/src/PrefsManager.h b/src/PrefsManager.h
index f57dff5a0c..142a9d64d4 100644
--- a/src/PrefsManager.h
+++ b/src/PrefsManager.h
@@ -339,7 +339,7 @@ protected:
  * pointer anyway). */
 extern bool			g_bAutoRestart;
 
-extern PrefsManager*	PREFSMAN;	// global and accessable from anywhere in our program
+extern PrefsManager*	PREFSMAN;	// global and accessible from anywhere in our program
 
 #endif
 
diff --git a/src/ProfileManager.cpp b/src/ProfileManager.cpp
index ecf59bb9c2..9ef64ecf3a 100644
--- a/src/ProfileManager.cpp
+++ b/src/ProfileManager.cpp
@@ -25,7 +25,7 @@
 #include "CharacterManager.h"
 
 
-ProfileManager*	PROFILEMAN = NULL;	// global and accessable from anywhere in our program
+ProfileManager*	PROFILEMAN = NULL;	// global and accessible from anywhere in our program
 
 static void DefaultLocalProfileIDInit( size_t /*PlayerNumber*/ i, RString &sNameOut, RString &defaultValueOut )
 {
diff --git a/src/ProfileManager.h b/src/ProfileManager.h
index 6cb5632388..33d9ba43d7 100644
--- a/src/ProfileManager.h
+++ b/src/ProfileManager.h
@@ -124,7 +124,7 @@ private:
 	Profile *m_pMachineProfile;
 };
 
-extern ProfileManager*	PROFILEMAN;	// global and accessable from anywhere in our program
+extern ProfileManager*	PROFILEMAN;	// global and accessible from anywhere in our program
 
 #endif
 
diff --git a/src/RageDisplay.cpp b/src/RageDisplay.cpp
index 81a3014829..292d00e35c 100644
--- a/src/RageDisplay.cpp
+++ b/src/RageDisplay.cpp
@@ -43,7 +43,7 @@ struct Centering
 
 static vector<Centering> g_CenteringStack( 1, Centering(0, 0, 0, 0) );
 
-RageDisplay*		DISPLAY	= NULL;
+RageDisplay*		DISPLAY	= NULL; // global and accessible from anywhere in our program
 
 Preference<bool>  LOG_FPS( "LogFPS", true );
 Preference<float> g_fFrameLimitPercent( "FrameLimitPercent", 0.0f );
diff --git a/src/RageDisplay.h b/src/RageDisplay.h
index 2dc3c79357..8e3e674116 100644
--- a/src/RageDisplay.h
+++ b/src/RageDisplay.h
@@ -410,7 +410,7 @@ protected:
 };
 
 
-extern RageDisplay*		DISPLAY;	// global and accessable from anywhere in our program
+extern RageDisplay*		DISPLAY;	// global and accessible from anywhere in our program
 
 #endif
 /*
diff --git a/src/RageInput.cpp b/src/RageInput.cpp
index e636e12894..c384de4b12 100644
--- a/src/RageInput.cpp
+++ b/src/RageInput.cpp
@@ -7,7 +7,7 @@
 #include "LuaManager.h"
 #include "LocalizedString.h"
 
-RageInput* INPUTMAN = NULL; // globally accessable input device
+RageInput* INPUTMAN = NULL; // global and accessible from anywhere in our program
 
 Preference<RString> g_sInputDrivers( "InputDrivers", "" ); // "" == DEFAULT_INPUT_DRIVER_LIST
 
diff --git a/src/RageInput.h b/src/RageInput.h
index feda3611c6..ff58fc76ce 100644
--- a/src/RageInput.h
+++ b/src/RageInput.h
@@ -34,7 +34,7 @@ public:
 
 extern Preference<RString> g_sInputDrivers;
 
-extern RageInput*			INPUTMAN;	// global and accessable from anywhere in our program
+extern RageInput*			INPUTMAN;	// global and accessible from anywhere in our program
 
 #endif
 
diff --git a/src/RageLog.cpp b/src/RageLog.cpp
index d3dda497de..12b1d123ee 100644
--- a/src/RageLog.cpp
+++ b/src/RageLog.cpp
@@ -12,7 +12,7 @@
 #endif
 #include <map>
 
-RageLog* LOG;		// global and accessable from anywhere in the program
+RageLog* LOG;		// global and accessible from anywhere in the program
 
 /*
  * We have a couple log types and a couple logs.
diff --git a/src/RageLog.h b/src/RageLog.h
index 6201ad7ccb..8e3e262636 100644
--- a/src/RageLog.h
+++ b/src/RageLog.h
@@ -41,7 +41,7 @@ private:
 	void AddToRecentLogs( const RString &buf );
 };
 
-extern RageLog*	LOG;	// global and accessable from anywhere in our program
+extern RageLog*	LOG;	// global and accessible from anywhere in our program
 #endif
 
 /*
diff --git a/src/RageTextureManager.cpp b/src/RageTextureManager.cpp
index 4d6d959513..5e66e33275 100644
--- a/src/RageTextureManager.cpp
+++ b/src/RageTextureManager.cpp
@@ -29,7 +29,7 @@
 
 #include <map>
 
-RageTextureManager*		TEXTUREMAN		= NULL;
+RageTextureManager*		TEXTUREMAN		= NULL; // global and accessible from anywhere in our program
 
 namespace
 {
diff --git a/src/RageTextureManager.h b/src/RageTextureManager.h
index 5654c2d52b..dd41149834 100644
--- a/src/RageTextureManager.h
+++ b/src/RageTextureManager.h
@@ -93,7 +93,7 @@ private:
 	RageTextureID::TexPolicy m_TexturePolicy;
 };
 
-extern RageTextureManager*	TEXTUREMAN;	// global and accessable from anywhere in our program
+extern RageTextureManager*	TEXTUREMAN;	// global and accessible from anywhere in our program
 
 #endif
 
diff --git a/src/ScreenManager.cpp b/src/ScreenManager.cpp
index a626ef90a8..9b68e660c0 100644
--- a/src/ScreenManager.cpp
+++ b/src/ScreenManager.cpp
@@ -32,7 +32,7 @@
  * 
  * If a screen is added to the screen stack that isn't in the current screen group
  * (added to by GroupScreen), the screen group is reset: all prepared screens are
- * unloaded and the persistance list is cleared.
+ * unloaded and the persistence list is cleared.
  *
  * Note that not all screens yet support reuse in this way; proper use of BeginScreen
  * is required.  This will misbehave if a screen pushes another screen that's already
@@ -73,7 +73,7 @@
 #include "Foreach.h"
 #include "ActorUtil.h"
 
-ScreenManager*	SCREENMAN = NULL;	// global and accessable from anywhere in our program
+ScreenManager*	SCREENMAN = NULL;	// global and accessible from anywhere in our program
 
 static Preference<bool> g_bDelayedScreenLoad( "DelayedScreenLoad", false );
 //static Preference<bool> g_bPruneFonts( "PruneFonts", true );
diff --git a/src/ScreenManager.h b/src/ScreenManager.h
index 70d3608b65..d9b98649e6 100644
--- a/src/ScreenManager.h
+++ b/src/ScreenManager.h
@@ -104,7 +104,7 @@ private:
 };
 
 
-extern ScreenManager*	SCREENMAN;	// global and accessable from anywhere in our program
+extern ScreenManager*	SCREENMAN;	// global and accessible from anywhere in our program
 
 #endif
 
diff --git a/src/SongCacheIndex.cpp b/src/SongCacheIndex.cpp
index c6c4740f70..aeb34a2da9 100644
--- a/src/SongCacheIndex.cpp
+++ b/src/SongCacheIndex.cpp
@@ -27,7 +27,7 @@
 #define CACHE_INDEX SpecialFiles::CACHE_DIR + "index.cache"
 
 
-SongCacheIndex *SONGINDEX;
+SongCacheIndex *SONGINDEX; // global and accessible from anywhere in our program
 
 RString SongCacheIndex::GetCacheFilePath( const RString &sGroup, const RString &sPath )
 {
diff --git a/src/SongCacheIndex.h b/src/SongCacheIndex.h
index d33361044e..12c9d9e04d 100644
--- a/src/SongCacheIndex.h
+++ b/src/SongCacheIndex.h
@@ -19,7 +19,7 @@ public:
 	unsigned GetCacheHash( const RString &path ) const;
 };
 
-extern SongCacheIndex *SONGINDEX;	// global and accessable from anywhere in our program
+extern SongCacheIndex *SONGINDEX;	// global and accessible from anywhere in our program
 
 #endif
 
diff --git a/src/SongManager.cpp b/src/SongManager.cpp
index 551f22ee60..20401e5a9a 100644
--- a/src/SongManager.cpp
+++ b/src/SongManager.cpp
@@ -36,7 +36,7 @@
 #include "UnlockManager.h"
 #include "SpecialFiles.h"
 
-SongManager*	SONGMAN = NULL;	// global and accessable from anywhere in our program
+SongManager*	SONGMAN = NULL;	// global and accessible from anywhere in our program
 
 const RString ADDITIONAL_SONGS_DIR	= "/AdditionalSongs/";
 const RString ADDITIONAL_COURSES_DIR	= "/AdditionalCourses/";
diff --git a/src/SongManager.h b/src/SongManager.h
index 0ddb5bd69a..55bed22a24 100644
--- a/src/SongManager.h
+++ b/src/SongManager.h
@@ -217,7 +217,7 @@ protected:
 	ThemeMetric1D<RageColor>	COURSE_GROUP_COLOR;
 };
 
-extern SongManager*	SONGMAN;	// global and accessable from anywhere in our program
+extern SongManager*	SONGMAN;	// global and accessible from anywhere in our program
 
 #endif
 
diff --git a/src/StatsManager.cpp b/src/StatsManager.cpp
index ade50e7b5a..5357d4066c 100644
--- a/src/StatsManager.cpp
+++ b/src/StatsManager.cpp
@@ -14,7 +14,7 @@
 #include "CryptManager.h"
 #include "XmlFileUtil.h"
 
-StatsManager*	STATSMAN = NULL;	// global object accessable from anywhere in the program
+StatsManager*	STATSMAN = NULL;	// global object accessible from anywhere in the program
 
 void AddPlayerStatsToProfile( Profile *pProfile, const StageStats &ss, PlayerNumber pn );
 XNode* MakeRecentScoreNode( const StageStats &ss, Trail *pTrail, const PlayerStageStats &pss, MultiPlayer mp );
diff --git a/src/StatsManager.h b/src/StatsManager.h
index 0b9b812e9b..70bd664efc 100644
--- a/src/StatsManager.h
+++ b/src/StatsManager.h
@@ -39,7 +39,7 @@ private:
 	StageStats m_AccumPlayedStageStats;
 };
 
-extern StatsManager*	STATSMAN;	// global and accessable from anywhere in our program
+extern StatsManager*	STATSMAN;	// global and accessible from anywhere in our program
 
 #endif
 
diff --git a/src/ThemeManager.cpp b/src/ThemeManager.cpp
index c9fdfbba48..b65d9b3923 100644
--- a/src/ThemeManager.cpp
+++ b/src/ThemeManager.cpp
@@ -26,7 +26,7 @@
 #include "XmlFileUtil.h"
 #include <deque>
 
-ThemeManager*	THEME = NULL;	// global object accessable from anywhere in the program
+ThemeManager*	THEME = NULL;	// global object accessible from anywhere in the program
 
 static const RString THEME_INFO_INI = "ThemeInfo.ini";
 
diff --git a/src/ThemeManager.h b/src/ThemeManager.h
index 3bb9f3008f..eaa8278ba9 100644
--- a/src/ThemeManager.h
+++ b/src/ThemeManager.h
@@ -128,7 +128,7 @@ protected:
 	bool m_bPseudoLocalize;
 };
 
-extern ThemeManager*	THEME;	// global and accessable from anywhere in our program
+extern ThemeManager*	THEME;	// global and accessible from anywhere in our program
 
 #endif
 
diff --git a/src/UnlockManager.cpp b/src/UnlockManager.cpp
index 05623f8a45..cba162190d 100644
--- a/src/UnlockManager.cpp
+++ b/src/UnlockManager.cpp
@@ -19,7 +19,7 @@
 #include "GameManager.h"
 #include "Style.h"
 
-UnlockManager*	UNLOCKMAN = NULL;	// global and accessable from anywhere in our program
+UnlockManager*	UNLOCKMAN = NULL;	// global and accessible from anywhere in our program
 
 #define UNLOCK_NAMES		THEME->GetMetric ("UnlockManager","UnlockNames")
 #define UNLOCK(x)		THEME->GetMetricR("UnlockManager", ssprintf("Unlock%sCommand",x.c_str()));
diff --git a/src/UnlockManager.h b/src/UnlockManager.h
index 0f11505b3b..940ffa86c5 100644
--- a/src/UnlockManager.h
+++ b/src/UnlockManager.h
@@ -179,7 +179,7 @@ private:
 	set<RString> m_RouletteCodes; // "codes" which are available in roulette and which unlock if rouletted
 };
 
-extern UnlockManager*	UNLOCKMAN;  // global and accessable from anywhere in program
+extern UnlockManager*	UNLOCKMAN;  // global and accessible from anywhere in program
 
 #endif
 
diff --git a/src/arch/ArchHooks/ArchHooks.cpp b/src/arch/ArchHooks/ArchHooks.cpp
index 514f272cbb..54f1f7910c 100644
--- a/src/arch/ArchHooks/ArchHooks.cpp
+++ b/src/arch/ArchHooks/ArchHooks.cpp
@@ -9,7 +9,7 @@ bool ArchHooks::g_bQuitting = false;
 bool ArchHooks::g_bToggleWindowed = false;
 // Keep from pulling RageThreads.h into ArchHooks.h
 static RageMutex g_Mutex( "ArchHooks" );
-ArchHooks *HOOKS = NULL;
+ArchHooks *HOOKS = NULL; // global and accessible from anywhere in our program
 
 ArchHooks::ArchHooks(): m_bHasFocus(true), m_bFocusChanged(false)
 {
diff --git a/src/arch/ArchHooks/ArchHooks.h b/src/arch/ArchHooks/ArchHooks.h
index 70473654ef..713a5b718a 100644
--- a/src/arch/ArchHooks/ArchHooks.h
+++ b/src/arch/ArchHooks/ArchHooks.h
@@ -140,7 +140,7 @@ private:
 
 #endif
 
-extern ArchHooks *HOOKS;	// global and accessable from anywhere in our program
+extern ArchHooks *HOOKS;	// global and accessible from anywhere in our program
 
 /**
  * @file