diff --git a/Lib/7seg.c b/Lib/7seg.c
index a8a1e64..b19c9e2 100644
--- a/Lib/7seg.c
+++ b/Lib/7seg.c
@@ -189,7 +189,7 @@ int	foo, bar;
 int	iter;
 
 #if DEBUG_LEVEL 
-fprintf(stderr, ">> %s ( %p, %d, 0x%x )\n", __func__, img, nbre, k);
+fprintf(stderr, ">>> %s ( %p, %d, 0x%x )\n", __func__, img, nbre, k);
 #endif
 
 iter = 0;		/* safe value */
diff --git a/Lib/basic_io.c b/Lib/basic_io.c
index a8fa796..f428fa4 100644
--- a/Lib/basic_io.c
+++ b/Lib/basic_io.c
@@ -136,7 +136,7 @@ for (foo=0; foo<4; foo++)
 
 *pvalue = value;
 
-return FUNC_IS_BETA;
+return FUNC_IS_BETA;		/* XXX ? */
 }
 /*::------------------------------------------------------------------::*/
 int	Image_basicIO_write_I_long(FILE *fp, long value)
diff --git a/Lib/drawing.c b/Lib/drawing.c
index d1fea83..f31b405 100644
--- a/Lib/drawing.c
+++ b/Lib/drawing.c
@@ -89,8 +89,8 @@ int	dx, dy, ix, iy, inc;
 int	foo, plotx, ploty, x, y;
 int	plot;
 
-#if DEBUG_LEVEL > 1
-printf("%s   %4d  %4d   ----->   %4d  %4d\n", __func__, x1, y1, x2, y2);
+#if DEBUG_LEVEL
+printf(">>> %s ( %p  %4d %4d   %4d %4d\n", __func__, i, x1, y1, x2, y2);
 #endif
 
 dx = x2 - x1;		dy = y2 - y1;
diff --git a/Lib/tools.c b/Lib/tools.c
index c91e251..aaed23b 100644
--- a/Lib/tools.c
+++ b/Lib/tools.c
@@ -155,7 +155,7 @@ putc('\n', stderr);
 
 void Image_warning(char caractere, char *lig1, char *lig2, int k)
 {
-int	len1, len2, len, foo;
+int	len1, len2, len;
 
 len1 = len2 = 0;
 if (NULL != lig1)		len1 = strlen(lig1);
diff --git a/Lib/trigo.c b/Lib/trigo.c
deleted file mode 100644
index 34560f8..0000000
--- a/Lib/trigo.c
+++ /dev/null
@@ -1,30 +0,0 @@
-/*
- *			trigo.c
- *
- *	nouveau Thu 15 Sep 2022 09:33:53 PM CEST
- */
-
-#include  <stdio.h>
-#include  <string.h>
-#include  <stdlib.h>
-
-#ifdef NEED_ALLOCA_H
-#include  <alloca.h>
-#endif
-
-#include  "../tthimage.h"
-
-/*::------------------------------------------------------------------::*/
-Image_cos010(Image_Desc *src, Image_Desc *dst)
-{
-int			foo;
-
-if ( (foo=Image_compare_desc(src, dst)) ) {
-    fprintf(stderr, "%s: images not compatible, %d\n", __func__, foo);
-    return foo;
-    }
-
-return FULL_NUCKED;
-}
-/*::------------------------------------------------------------------::*/
-/*::------------------------------------------------------------------::*/