diff --git a/Fonderie/Makefile b/Fonderie/Makefile
index 789b330..9541db8 100644
--- a/Fonderie/Makefile
+++ b/Fonderie/Makefile
@@ -21,6 +21,7 @@ t:	t.c Makefile ${OBJS}
 
 # ---------------------------------------------------------
 #
+#	the two main programms
 #
 
 fonderie:	fonderie.c ${DEPS} ${OBJS} Makefile
@@ -31,7 +32,9 @@ interpolator:	interpolator.c ${DEPS} ${OBJS} Makefile
 	gcc ${COPT} $< ${OBJS}  ${LIBS} -lz -o $@
 
 # ---------------------------------------------------------
-
+#
+#	a lot of silly functions
+#
 crapulator.o:	crapulator.c ${DEPS} Makefile
 	gcc ${COPT} -c $<
 
diff --git a/Fonderie/crapulator.c b/Fonderie/crapulator.c
index b4e036f..1e3d239 100644
--- a/Fonderie/crapulator.c
+++ b/Fonderie/crapulator.c
@@ -173,6 +173,7 @@ switch (idFx) {
 		(void)fimg_killborders(image);
 		break;
 	case 13:
+				/* smooth filter */
 		retval = insitu_filtre3x3(image, 0);
 		break;
 	case 14:
@@ -192,6 +193,7 @@ switch (idFx) {
 		retval = upside_down(image);
 		break;
 	case 19:
+				/* hipass filter */
 		retval = insitu_filtre3x3(image, 1);
 		break;
 
diff --git a/Fonderie/filterstack.c b/Fonderie/filterstack.c
index 45d061a..8e279a6 100644
--- a/Fonderie/filterstack.c
+++ b/Fonderie/filterstack.c
@@ -74,7 +74,7 @@ if (numid < 0 || numid > NUMBER_OF_STACK) {
 	exit(1);
 	}
 
-fprintf(stderr, "--- %2d -- %-20s --------\n", numid, txt);
+fprintf(stderr, "---- %2d ---- %-20s -----------\n", numid, txt);
 // fprintf(stderr, "stack at %p, size %d, current %d\n",
 //			f_slots, nbre_filters, idx_slot); 
 fprintf(stderr, "idx ___ fx# _ name ________ ival _ fval ___\n");
@@ -200,6 +200,13 @@ for (;;) {
 	if (NULL==cptr)	break;
 	tmparg = NULL;		/* for the next pass of strtok */
 	// fprintf(stderr, "  parsing '%s'\n", cptr);
+
+	if ('@' == cptr[0]) {
+		fprintf(stderr, "%s: got indirect '%s'\n", __func__,
+							cptr+1);
+		continue;
+		}
+
 	if (1 == sscanf(cptr, "%d", &value)) {
 		foo = filterstack_add(numid, value, 1, 1.0);
 		if (foo) {
diff --git a/Fonderie/interpolator.c b/Fonderie/interpolator.c
index bf2583f..69d622a 100644
--- a/Fonderie/interpolator.c
+++ b/Fonderie/interpolator.c
@@ -311,10 +311,10 @@ if (foo) {
 	}
 
 if (verbosity > 1) {
-	puts("==============");
+	puts("=========================");
 	filterstack_list(0, __FILE__);
 	filterstack_list(1, __FILE__);
-	puts("==============");
+	puts("=========================");
 	}
 
 nbrsteps = atoi(argv[optind+2]);