diff --git a/plugins/include/console.inc b/plugins/include/console.inc
index 2440216f..a0350c9b 100644
--- a/plugins/include/console.inc
+++ b/plugins/include/console.inc
@@ -60,10 +60,11 @@ enum ReplySource
  */
 #define FCVAR_NONE				0		/**< The default, no flags at all */
 #define FCVAR_UNREGISTERED		(1<<0)	/**< If this is set, don't add to linked list, etc. */
-#define FCVAR_LAUNCHER			(1<<1)	/**< Defined by launcher. */
+#define FCVAR_DEVELOPMENTONLY	(1<<1)	/**< Hidden in released products. Flag is removed automatically if ALLOW_DEVELOPMENT_CVARS is defined. (OB+) */
 #define FCVAR_GAMEDLL			(1<<2)	/**< Defined by the game DLL. */
 #define FCVAR_CLIENTDLL			(1<<3)	/**< Defined by the client DLL. */
-#define FCVAR_MATERIAL_SYSTEM	(1<<4)	/**< Defined by the material system. */
+#define FCVAR_MATERIAL_SYSTEM	(1<<4)	/**< Defined by the material system. (EP1-only) */
+#define FCVAR_HIDDEN			(1<<4)	/**< Hidden. Doesn't appear in find or autocomplete. Like DEVELOPMENTONLY, but can't be compiled out.1 (OB+) */
 #define FCVAR_PROTECTED			(1<<5)	/**< It's a server cvar, but we don't send the data since it's a password, etc. Sends 1 if it's not bland/zero, 0 otherwise as value. */
 #define FCVAR_SPONLY			(1<<6)	/**< This cvar cannot be changed by clients connected to a multiplayer server. */
 #define	FCVAR_ARCHIVE			(1<<7)	/**< Set to cause it to be saved to vars.rc */
@@ -74,19 +75,24 @@ enum ReplySource
 #define FCVAR_NEVER_AS_STRING	(1<<12)	/**< Never try to print that cvar. */
 #define FCVAR_REPLICATED		(1<<13)	/**< Server setting enforced on clients. */
 #define FCVAR_CHEAT				(1<<14)	/**< Only useable in singleplayer / debug / multiplayer & sv_cheats */
-#define FCVAR_STUDIORENDER		(1<<15)	/**< Defined by the studiorender system. */
+#define FCVAR_SS				(1<<15)	/**< causes varnameN where N == 2 through max splitscreen slots for mod to be autogenerated (L4D+) */
 #define FCVAR_DEMO				(1<<16)	/**< Record this cvar when starting a demo file. */
 #define FCVAR_DONTRECORD		(1<<17)	/**< Don't record these command in demo files. */
-#define FCVAR_PLUGIN			(1<<18)	/**< Defined by a 3rd party plugin. */
-#define FCVAR_DATACACHE			(1<<19)	/**< Defined by the datacache system. */
-#define FCVAR_TOOLSYSTEM		(1<<20)	/**< Defined by an IToolSystem library */
-#define FCVAR_FILESYSTEM		(1<<21)	/**< Defined by the file system. */
+#define FCVAR_SS_ADDED			(1<<18) /**< This is one of the "added" FCVAR_SS variables for the splitscreen players (L4D+) */
+#define FCVAR_RELEASE			(1<<19)	/**< Cvars tagged with this are the only cvars avaliable to customers (L4D+) */
+#define FCVAR_RELOAD_MATERIALS	(1<<20)	/**< If this cvar changes, it forces a material reload (OB+) */
+#define FCVAR_RELOAD_TEXTURES	(1<<21)	/**< If this cvar changes, if forces a texture reload (OB+) */
 #define FCVAR_NOT_CONNECTED		(1<<22)	/**< Cvar cannot be changed by a client that is connected to a server. */
-#define FCVAR_SOUNDSYSTEM		(1<<23)	/**< Defined by the soundsystem library. */
-#define FCVAR_ARCHIVE_XBOX		(1<<24)	/**< Cvar written to config.cfg on the Xbox. */
-#define FCVAR_INPUTSYSTEM		(1<<25)	/**< Defined by the inputsystem DLL. */
-#define FCVAR_NETWORKSYSTEM		(1<<26)	/**< Defined by the network system. */
-#define FCVAR_VPHYSICS			(1<<27)	/**< Defined by vphysics. */
+#define FCVAR_MATERIAL_SYSTEM_THREAD	(1<<23)	/**< Indicates this cvar is read from the material system thread (OB+) */
+#define FCVAR_ARCHIVE_XBOX				(1<<24)	/**< Cvar written to config.cfg on the Xbox. */
+#define FCVAR_ARCHIVE_GAMECONSOLE		(1<<24)	/**< Cvar written to config.cfg on the Xbox. */
+#define FCVAR_ACCESSIBLE_FROM_THREADS	(1<<25)	/**< used as a debugging tool necessary to check material system thread convars (OB+) */
+#define FCVAR_SERVER_CAN_EXECUTE		(1<<28)	/**< the server is allowed to execute this command on clients via
+													ClientCommand/NET_StringCmd/CBaseClientState::ProcessStringCmd. (OB+) */
+#define FCVAR_SERVER_CANNOT_QUERY		(1<<29)	/**< If this is set, then the server is not allowed to query this cvar's value (via
+													IServerPluginHelpers::StartQueryCvarValue). */
+#define FCVAR_CLIENTCMD_CAN_EXECUTE		(1<<30)	/**< IVEngineClient::ClientCmd is allowed to execute this command. 
+													Note: IVEngineClient::ClientCmd_Unrestricted can run any client command. */
 
 /**
  * @endsection