diff --git a/.gitignore b/.gitignore
index f07a905..add1a91 100644
--- a/.gitignore
+++ b/.gitignore
@@ -25,3 +25,4 @@ tools/mkfimg
 tools/png2fimg
 tools/addtga2fimg
 tools/addpnm2fimg
+tools/cumulfimgs
diff --git a/floatimg.h b/floatimg.h
index dba2cf5..f5a0b33 100644
--- a/floatimg.h
+++ b/floatimg.h
@@ -2,7 +2,7 @@
  *	floatimg.h
  */
 
-#define		FIMG_VERSION	60
+#define		FIMG_VERSION	61
 
 /*
  *	in memory descriptor
diff --git a/tools/cumulfimgs.c b/tools/cumulfimgs.c
new file mode 100644
index 0000000..5ac8c36
--- /dev/null
+++ b/tools/cumulfimgs.c
@@ -0,0 +1,34 @@
+#include  <stdio.h>
+#include  <stdlib.h>
+#include  <unistd.h>
+
+#include  "../floatimg.h"
+
+int		verbosity;
+/* --------------------------------------------------------------------- */
+void help(int v)
+{
+puts("options :");
+puts("\t-v\tincrease verbosity");
+puts("\t-o\tname of output file");
+
+if (verbosity) { puts(""); fimg_print_version(1); }
+}
+/* --------------------------------------------------------------------- */
+int main(int argc, char *argv[])
+{
+int		foo;
+int		opt;
+char		*output_file = "noname.fimg";
+
+while ((opt = getopt(argc, argv, "ho:v")) != -1) {
+	switch(opt) {
+		case 'h':	help(0);			break;
+		case 'o':	output_file = optarg;		break;
+		case 'v':	verbosity++;			break;
+		}
+	}
+
+return 0;
+}
+/* --------------------------------------------------------------------- */
diff --git a/tools/fimg2pnm.c b/tools/fimg2pnm.c
index 8a64026..017c1d1 100644
--- a/tools/fimg2pnm.c
+++ b/tools/fimg2pnm.c
@@ -1,3 +1,7 @@
+/*
+ *	conversion vers le format PNM 
+ *
+ */
 #include  <stdio.h>
 #include  <stdlib.h>
 #include  <unistd.h>
@@ -60,3 +64,4 @@ if (foo) fprintf(stderr, "conversion -> %d\n", foo);
 
 return 0;
 }
+/* --------------------------------------------------------------------- */
diff --git a/tools/mkfimg.c b/tools/mkfimg.c
index 7d006ad..697d996 100644
--- a/tools/mkfimg.c
+++ b/tools/mkfimg.c
@@ -20,14 +20,13 @@ if (4 != argc) {
 	}
 fname = argv[1];
 width = atoi(argv[2]);		height = atoi(argv[3]);	
-fprintf(stderr, "making  %s  %d x %d\n", fname, width, height);
+fprintf(stderr, "making  '%s'  %d x %d\n", fname, width, height);
 
 foo = fimg_create(&fimg, width, height, 3);
 if (foo) {
 	fprintf(stderr, "create floatimg -> %d\n", foo);
 	exit(1);
 	}
-// fimg_describe(&fimg, "just a black flimg");
 fimg_clear(&fimg);
 
 foo = fimg_dump_to_file(&fimg, fname, 0);