"for example" is more appropriate than "that is"

NEWS

@@ -17,7 +17,7 @@ Changes from 0.3.0
 	* Object-oriented runtime system, in the style of Objective-C.
 	* Runtime fixups of built-in functions whose builtin number is
 	  zero. If a built-in function is available to the engine, with
-	  the same name given in the source code (i.e.
+	  the same name given in the source code (e.g.
 	  "void (void) coredump = #0;"), the engine will set the value
 	  to the actual number used by the engine.
 	* Debugging support (needs compiler support, which qfcc

tools/qfcc/include/def.h

@@ -52,6 +52,7 @@ typedef struct def_s {
 	unsigned		global:1;		// globally declared def
 	unsigned		external:1;		// externally declared def
 	unsigned		local:1;		// function local def
+	unsigned		system:1;		// system def
 
 	string_t		file;			// source file
 	int				line;			// source line
@@ -98,6 +99,7 @@ typedef struct scope_s {
 typedef enum {
 	st_none,
 	st_global,
+	st_system,
 	st_extern,
 	st_static,
 	st_local

tools/qfcc/include/obj_file.h

@@ -75,6 +75,7 @@ typedef struct qfo_def_s {
 #define QFOD_GLOBAL			(1u<<3)
 #define QFOD_EXTERNAL		(1u<<4)
 #define QFOD_LOCAL			(1u<<5)
+#define QFOD_SYSTEM			(1u<<6)
 
 typedef struct qfo_func_s {
 	string_t    name;

tools/qfcc/source/def.c

@@ -151,6 +151,9 @@ set_storage_bits (def_t *def, storage_class_t storage)
 	switch (storage) {
 		case st_none:
 			break;
+		case st_system:
+			def->system = 1;
+			// fall through
 		case st_global:
 			def->global = 1;
 			def->external = 0;
@@ -240,6 +243,7 @@ get_def (type_t *type, const char *name, scope_t *scope,
 		case st_none:
 		case st_global:
 		case st_local:
+		case st_system:
 			space = scope->space;
 			break;
 		case st_extern:

tools/qfcc/source/obj_file.c

@@ -134,6 +134,8 @@ flags (def_t *d)
 		flags |= QFOD_EXTERNAL;
 	if (d->local)
 		flags |= QFOD_LOCAL;
+	if (d->system)
+		flags |= QFOD_SYSTEM;
 	return flags;
 }
 
@@ -538,6 +540,7 @@ qfo_to_progs (qfo_t *qfo, pr_info_t *pr)
 		pd->global      = (qd->flags & QFOD_GLOBAL)      != 0;
 		pd->external    = (qd->flags & QFOD_EXTERNAL)    != 0;
 		pd->local       = (qd->flags & QFOD_LOCAL)       != 0;
+		pd->system      = (qd->flags & QFOD_SYSTEM)      != 0;
 		pd->file = qd->file;
 		pd->line = qd->line;
 	}

tools/qfcc/source/qc-lex.l

@@ -301,6 +301,7 @@ static keyword_t keywords[] = {
 	{"@argv",		ARGV,	0,					0, PROG_VERSION},
 	{"@extern",		EXTERN,	0,					1, PROG_ID_VERSION},
 	{"@static",		STATIC,	0,					1, PROG_ID_VERSION},
+	{"@system",		SYSTEM,	0,					1, PROG_ID_VERSION},
 	{"@sizeof",		SIZEOF,	0,					0, PROG_VERSION},
 };
 

tools/qfcc/source/qc-parse.y

@@ -128,7 +128,7 @@ void free_local_inits (hashtab_t *def_list);
 %token	LOCAL RETURN WHILE DO IF ELSE FOR BREAK CONTINUE ELLIPSIS NIL
 %token	IFBE IFB IFAE IFA
 %token	SWITCH CASE DEFAULT STRUCT UNION ENUM TYPEDEF SUPER SELF THIS
-%token	ARGC ARGV EXTERN STATIC SIZEOF
+%token	ARGC ARGV EXTERN STATIC SYSTEM SIZEOF
 %token	ELE_START
 %token	<type> TYPE
 %token	CLASS DEFS ENCODE END IMPLEMENTATION INTERFACE PRIVATE PROTECTED
@@ -223,6 +223,7 @@ simple_def
 storage_class
 	: EXTERN		{ current_storage = st_extern; }
 	| STATIC		{ current_storage = st_static; }
+	| SYSTEM		{ current_storage = st_system; }
 	;
 
 struct_defs