Index: ttf2lht/drv_approx.c
===================================================================
--- ttf2lht/drv_approx.c	(revision 18927)
+++ ttf2lht/drv_approx.c	(revision 18928)
@@ -1,5 +1,7 @@
 #include "ttf2lht.h"
 
+char *drv_approx_comment = "!!";
+
 static double sqr(double a)
 {
 	return a*a;
@@ -12,13 +14,13 @@
 	double nodes = 10, td = 1.0 / nodes;
 	FT_Vector v;
 
-	printf("## conic to {\n");
+	if (drv_approx_comment != NULL) printf("%s conic to {\n", drv_approx_comment);
 	for(t = 0.0; t <= 1.0; t += td) {
 		v.x = sqr(1.0-t) * s->x + 2*t*(1.0-t)*control->x + t*t*to->x;
 		v.y = sqr(1.0-t) * s->y + 2*t*(1.0-t)*control->y + t*t*to->y;
 		s->funcs->line_to(&v, s);
 	}
-	printf("## }\n");
+	if (drv_approx_comment != NULL) printf("%s }\n", drv_approx_comment);
 
 	s->x = to->x;
 	s->y = to->y;
@@ -28,6 +30,7 @@
 int stroke_approx_cubic_to(const FT_Vector *control1, const FT_Vector *control2, const FT_Vector *to, void *s_)
 {
 	stroke_t *s = (stroke_t *)s_;
-	printf("# cubic to\n");
+	if (drv_approx_comment != NULL) printf("%s cubic to {\n", drv_approx_comment);
+	if (drv_approx_comment != NULL) printf("%s }\n", drv_approx_comment);
 	return 0;
 }
Index: ttf2lht/drv_approx.h
===================================================================
--- ttf2lht/drv_approx.h	(revision 18927)
+++ ttf2lht/drv_approx.h	(revision 18928)
@@ -1,2 +1,4 @@
+extern char *drv_approx_comment;
+
 int stroke_approx_conic_to(const FT_Vector *control, const FT_Vector *to, void *s_);
 int stroke_approx_cubic_to(const FT_Vector *control1, const FT_Vector *control2, const FT_Vector *to, void *s_);