diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..25a7384
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+*.o
+*.exe
diff --git a/Src/uno.c b/Src/uno.c
index fd7d961..aec3ac3 100644
--- a/Src/uno.c
+++ b/Src/uno.c
@@ -63,7 +63,8 @@ uno_usage(void)
 	fprintf(stderr, "\t-n		ignore preprocessing directives in source files\n");
 	fprintf(stderr, "\t-o arg	ignored, for modest compatability with cc arguments\n");
 	fprintf(stderr, "\t-m uno.dfn	use master (type) definitions file uno.dfn\n");
-	fprintf(stderr, "\t-x f		declare f to be a function that does not return\n\n");
+	fprintf(stderr, "\t-x f		declare f to be a function that does not return.\n"
+									"\t\t\tOptional: Add :n where n is the number of parameters.\n");
 	fprintf(stderr, "\t-V        	print version number and exit\n");
 	fprintf(stderr, "\t-s		print symbol table information and exit\n\n");
 	fprintf(stderr, "\t-l or -c	perform only local analysis, not global\n");
diff --git a/Src/uno_lts.c b/Src/uno_lts.c
index 1458181..a65447c 100644
--- a/Src/uno_lts.c
+++ b/Src/uno_lts.c
@@ -594,7 +594,7 @@ lts_redirect(State *s)
 	frame->s = s;
 	frame->nxt = stck;
 	stck = frame;
-	
+
 	if (s->n->hdr.which == NODE_T)
 	{	switch (s->n->hdr.type) {
 		case TN_JUMP:
@@ -663,20 +663,22 @@ custom_exit(const char *s)
 {	EX *nx;
 	char *col;
 
+	nx = (EX *) emalloc(sizeof(EX));
+	nx->f = (char *) emalloc(strlen(s)+1);
+	strcpy(nx->f, s);
+
 	col = strchr(s, ':');
 	if (col)
 	{	*col = '\0';
 		col++;
+		nx->has_arg = 1;
+		nx->arg_val = atoi(col);
+	}
+	else
+	{	nx->has_arg = 0;
+		nx->arg_val = 0;
 	}
 
-	nx = (EX *) emalloc(sizeof(EX));
-	nx->f = (char *) emalloc(strlen(s)+1);
-	strcpy(nx->f, s);
-	if (col)
-	{	nx->has_arg = 1;
-		nx->arg_val = atoi(col);
-	} else
-		nx->has_arg = 0;
 	nx->nxt = exs;
 	exs = nx;
 }
@@ -1213,7 +1215,7 @@ static void
 uno_shared(void)
 {	SymRef *r;
 	int stc;
-	
+
 	for (r = globuse; r; r = r->nxt)
 	{	stc = r->status;
 
@@ -3631,7 +3633,7 @@ lts_for(State *n, for_node *forn)
 			t->hdr.deftyp = forn->test->hdr.deftyp;
 #endif
 		}
-		t->cond = forn->test;	
+		t->cond = forn->test;
 		t->then_n = ts->n;		/* just for form, */
 		t->else_n = es->n;		/* the real info is in tr */