diff --git a/doc/zzuf.1 b/doc/zzuf.1
index 683698e..b882bdc 100644
--- a/doc/zzuf.1
+++ b/doc/zzuf.1
@@ -10,15 +10,18 @@ zzuf \- multiple purpose fuzzer
 .I ratio
 ] [
 .B \-s
-.I seed[:stop]
-] [
-.B \-F
-.I children
+.I seed
+|
+.B \-s
+.I start:stop
 ]
 .PD 0
 .IP
 .PD
 [
+.B \-F
+.I children
+] [
 .B \-B
 .I bytes
 ] [
@@ -185,6 +188,17 @@ to reproduce the same behaviour without using
 
 .B % vlc fuzzy-movie.avi
 
+.fi
+Fuzz
+.BR mplayer 's
+input with seeds 0 to 9999, launching up to 3 simultaneous child processes
+and killing
+.BR mplayer
+if it takes more than one minute to read the file:
+.fn
+
+.B % zzuf -q -s 0:10000 -F 3 -T 60 -r 0.02 -i movie.avi mplayer movie.avi -- -benchmark -vo null -fps 1000
+
 .fi
 .RI
 .SH BUGS
@@ -194,7 +208,7 @@ Only the most common file operations are implemented as of now:
 .BR fopen (),
 .BR fseek (),
 etc. One important unimplemented function is
-.BR fopen ().
+.BR fscanf ().
 
 Network fuzzing is not implemented. It is not yet possible to insert or
 drop bytes from the input, to fuzz according to the file format, or to do
diff --git a/src/zzuf.c b/src/zzuf.c
index 796d541..4186db9 100644
--- a/src/zzuf.c
+++ b/src/zzuf.c
@@ -206,7 +206,7 @@ int main(int argc, char *argv[])
             if(child_list[i].status == STATUS_RUNNING
                 && maxbytes >= 0 && child_list[i].bytes > maxbytes)
             {
-                fprintf(stderr, "%i: exceeded byte count, sending SIGTERM\n",
+                fprintf(stderr, "seed %i: data exceeded, sending SIGTERM\n",
                         child_list[i].seed);
                 kill(child_list[i].pid, SIGTERM);
                 child_list[i].date = now;
@@ -217,7 +217,7 @@ int main(int argc, char *argv[])
                 && maxtime >= 0.0
                 && difftime(now, child_list[i].date) > maxtime)
             {
-                fprintf(stderr, "%i: time exceeded, sending SIGTERM\n",
+                fprintf(stderr, "seed %i: time exceeded, sending SIGTERM\n",
                         child_list[i].seed);
                 kill(child_list[i].pid, SIGTERM);
                 child_list[i].date = now;
@@ -231,7 +231,7 @@ int main(int argc, char *argv[])
             if(child_list[i].status == STATUS_SIGTERM
                 && difftime(now, child_list[i].date) > 2.0)
             {
-                fprintf(stderr, "%i: not responding, sending SIGKILL\n",
+                fprintf(stderr, "seed %i: not responding, sending SIGKILL\n",
                         child_list[i].seed);
                 kill(child_list[i].pid, SIGKILL);
                 child_list[i].status = STATUS_SIGKILL;
@@ -254,10 +254,10 @@ int main(int argc, char *argv[])
                 continue;
 
             if(WIFEXITED(status) && WEXITSTATUS(status))
-                fprintf(stderr, "%i: exit %i\n",
+                fprintf(stderr, "seed %i: exit %i\n",
                         child_list[i].seed, WEXITSTATUS(status));
             else if(WIFSIGNALED(status))
-                fprintf(stderr, "%i: signal %i\n",
+                fprintf(stderr, "seed %i: signal %i\n",
                         child_list[i].seed, WTERMSIG(status));
 
             if(child_list[i].outfd >= 0)
@@ -425,8 +425,8 @@ static void version(void)
 #if defined(HAVE_GETOPT_H)
 static void usage(void)
 {
-    printf("Usage: zzuf [ -vqdh ] [ -r ratio ] [ -s seed[:stop] ] [ -F children ]\n");
-    printf("                      [ -B bytes ] [ -T seconds ]\n");
+    printf("Usage: zzuf [ -vqdh ] [ -r ratio ] [ -s seed | -s start:stop]\n");
+    printf("                      [ -F children ] [ -B bytes ] [ -T seconds ]\n");
     printf("                      [ -i include ] [ -e exclude ] COMMAND [ARGS]...\n");
     printf("Run COMMAND and randomly fuzz its input files.\n");
     printf("\n");