diff --git a/README b/README
index 955320e..a6b9776 100644
--- a/README
+++ b/README
@@ -18,30 +18,30 @@ Fuzz 1% of the input bits of the "cat" program using seed 94324:
   # zzuf -s 94324 -r 0.01 cat /etc/motd
 
 Fuzz the input of the "convert" program, using file foo.jpeg as the original
-input and restricting fuzzing to filenames matching the regular expression
-"foo[.]jpeg" (because convert will also open its own configuration files and
-we do not want zzuf to fuzz them):
+input and excluding .xml files from fuzzing (because convert will also open
+its own configuration files and we do not want zzuf to fuzz them):
 
-  # zzuf -I 'foo[.]jpeg' convert -- foo.jpeg -format tga /dev/null
+  # zzuf -E '\.xml$' convert -- foo.jpeg -format tga /dev/null
 
-Fuzz the input of VLC, using file movie.avi as the original input, and
+Fuzz the input of VLC, using file movie.avi as the original input and
+restricting fuzzing to filenames that appear on the command line, then
 generate fuzzy-movie.avi which is a file that can be fed to VLC to reproduce
 the behaviour without using zzuf:
 
-  # zzuf -s 87423 -r 0.01 vlc movie.avi
+  # zzuf -c -s 87423 -r 0.01 vlc movie.avi
 
-  # zzuf -s 87423 -r 0.01 cp movie.avi fuzzy-movie.avi
+  # zzuf -c -s 87423 -r 0.01 cp movie.avi fuzzy-movie.avi
   # vlc fuzzy-movie.avi
 
 Fuzz mplayer's input with seeds 0 to 9999 and kill processes that take more
 than one minute to read the movie file:
 
-  # zzuf -q -s 0:10000 -T 60 -r 0.02 -I movie.avi \
+  # zzuf -c -q -s 0:10000 -T 60 -r 0.02 \
          mplayer movie.avi -- -benchmark -vo null -fps 1000
 
 Same as above with up to 15 simultaneous child processes because we are
 playing a sound file:
 
-  # zzuf -F 15 -q -s 0:10000 -T 60 -r 0.02 -I song.mp3 \
+  # zzuf -c -F 15 -q -s 0:10000 -T 60 -r 0.02 \
          mplayer song.mp3 -- -benchmark -ao null
 
diff --git a/doc/zzuf.1 b/doc/zzuf.1
index 2bd2cae..a17ff85 100644
--- a/doc/zzuf.1
+++ b/doc/zzuf.1
@@ -183,24 +183,24 @@ Fuzz the input of the
 .B convert
 program, using file
 .B foo.jpeg
-as the original input and restricting fuzzing to filenames matching the
-regular expression
-.B "foo[.]jpeg"
-(because
+as the original input and excluding
+.B .xml
+files from fuzzing (because
 .B convert
 will also open its own configuration files and we do not want
 .B zzuf
 to fuzz them):
 .nf
 
-.B % zzuf -I "foo[.]jpeg" convert -- foo.jpeg -format tga /dev/null
+.B % zzuf -E "\\.xml$" convert -- foo.jpeg -format tga /dev/null
 
 .fi
 Fuzz the input of
 .BR vlc ,
 using file
 .B movie.avi
-as the original input, and generate
+as the original input and restricting fuzzing to filenames that appear on
+the command line, then generate
 .B fuzzy-movie.avi
 which is a file that can be fed to
 .B vlc
@@ -208,9 +208,9 @@ to reproduce the same behaviour without using
 .BR zzuf :
 .fn
 
-.B % zzuf -s 87423 -r 0.01 vlc movie.avi
+.B % zzuf -c -s 87423 -r 0.01 vlc movie.avi
 
-.B % zzuf -s 87423 -r 0.01 cp movie.avi fuzzy-movie.avi
+.B % zzuf -c -s 87423 -r 0.01 cp movie.avi fuzzy-movie.avi
 
 .B % vlc fuzzy-movie.avi
 
@@ -223,7 +223,7 @@ and killing
 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
+.B % zzuf -c -q -s 0:10000 -F 3 -T 60 -r 0.02 mplayer movie.avi -- -benchmark -vo null -fps 1000
 
 .fi
 .RI