diff --git a/.gitignore b/.gitignore
index 16bb1d5af..e92548047 100644
--- a/.gitignore
+++ b/.gitignore
@@ -32,3 +32,4 @@
 .su[a-z]
 .*.sv[a-z]
 .*.sw[a-z]
+.sw[a-z]
diff --git a/1998/schweikh3/.gitignore b/1998/schweikh3/.gitignore
index 5e2e8803f..271e76fff 100644
--- a/1998/schweikh3/.gitignore
+++ b/1998/schweikh3/.gitignore
@@ -10,6 +10,7 @@ indent.c
 indent.o
 prog.orig
 samefile
+samefile.alt
 schweikh3
 schweikh3.alt
 schweikh3.orig
diff --git a/1998/schweikh3/Makefile b/1998/schweikh3/Makefile
index 8c9281799..d2b3ee245 100644
--- a/1998/schweikh3/Makefile
+++ b/1998/schweikh3/Makefile
@@ -211,7 +211,7 @@ clean:
 	fi
 
 clobber: clean
-	${RM} -f ${TARGET} ${ALT_TARGET}
+	${RM} -f ${TARGET} ${ALT_TARGET} samefile.alt
 	${RM} -rf *.dSYM
 	@-if [ -e sandwich ]; then \
 	    ${RM} -f sandwich; \
diff --git a/2013/endoh2/README.md b/2013/endoh2/README.md
index ff5878802..5b095666e 100644
--- a/2013/endoh2/README.md
+++ b/2013/endoh2/README.md
@@ -24,7 +24,7 @@ download one or both before exiting.
 ## Try:
 
 ```sh
-cat jpeg.c
+less jpeg.c
 ```
 
 Next look at `jpeg.jpg` in an image viewer program.
diff --git a/2013/endoh3/.gitignore b/2013/endoh3/.gitignore
index fbe1fd107..a86f8b31b 100644
--- a/2013/endoh3/.gitignore
+++ b/2013/endoh3/.gitignore
@@ -7,3 +7,4 @@ indent
 indent.c
 indent.o
 prog.orig
+*.wav
diff --git a/2013/endoh3/Makefile b/2013/endoh3/Makefile
index f419e61bf..31aa8d3b6 100644
--- a/2013/endoh3/Makefile
+++ b/2013/endoh3/Makefile
@@ -39,7 +39,7 @@ include ../../var.mk
 # Common C compiler warnings to silence
 #
 CSILENCE= -Wno-error -Wno-implicit-function-declaration -Wno-implicit-int \
-	-Wno-main -Wno-deprecated-non-prototype
+	-Wno-main -Wno-deprecated-non-prototype -Wno-unused-parameter
 
 # Common C compiler warning flags
 #
@@ -204,7 +204,7 @@ clean:
 
 clobber: clean
 	${RM} -f ${TARGET} ${ALT_TARGET}
-	${RM} -rf *.dSYM
+	${RM} -rf *.dSYM *.wav
 	@-if [ -e sandwich ]; then \
 	    ${RM} -f sandwich; \
 	    echo 'ate sandwich'; \
diff --git a/2013/endoh3/README.md b/2013/endoh3/README.md
index b330ca946..ca7d055ae 100644
--- a/2013/endoh3/README.md
+++ b/2013/endoh3/README.md
@@ -22,21 +22,32 @@ For more detailed information see [2013 endoh3 in bugs.md](/bugs.md#2013-endoh3)
 ./endoh3
 ```
 
+This program plays sound. See [FAQ 3.10 - How do I compile and use an IOCCC
+winner that requires sound?](/faq.md#faq3_10) if you do not know how to set your
+system up for this or if you want to verify that everything is oky.
+
 
 ## Try:
 
-Trying this out will depend on how your system can play sounds. The author's
-remarks include some options for different operating systems.
-
-The simplest way is to create a .wav file and have your system play that.
-
 ```sh
-echo 'CDEFGABc' | ./endoh3 | ruby wavify.rb > cde.wav
+./try.sh
+
+./try.sh ABC
+
+./try.sh test.abc yankee.abc
+
+./try.sh *.abc
 ```
 
-Observe how you will need ruby installed.
+The script will check for SoX first and next `padsp` from `PulseAudio` and
+finally if neither are found if you have `ruby(1)` installed it'll use the
+included ruby script to convert it to a WAV file for you to play.
 
-There are also some other musical samples, twinkle.abc and menuet.abc.
+If no args are passed to the script it will play [twinkle.abc](twinkle.abc) and
+the string `ABC`. Otherwise while there's a remaining arg if it's a file it will
+run the program on the file. If it's not a file it'll run it as a string.
+
+The `*.abc` files are provided as music samples.
 
 
 ## Judges' remarks:
diff --git a/2013/endoh3/endoh3.c b/2013/endoh3/endoh3.c
index ef1a255a1..dfdd552db 100644
--- a/2013/endoh3/endoh3.c
+++ b/2013/endoh3/endoh3.c
@@ -1 +1 @@
-char a;float b,c;main(d){for(;d>2e3*c?c=1,scanf(" %c%f",&a,&c),d=55-a%32*9/5,b=d>9,d=d%13-a/32*12:1;a=2)++d<24?b*=89/84.:putchar(a=b*d);}
\ No newline at end of file
+char a;float b,c;main(d,e)char**e;{for(;d>2e3*c?c=1,scanf(" %c%f",&a,&c),d=55-a%32*9/5,b=d>9,d=d%13-a/32*12:1;a=2)++d<24?b*=89/84.:putchar(a=b*d);}
diff --git a/2013/endoh3/try.sh b/2013/endoh3/try.sh
new file mode 100755
index 000000000..02606cd4c
--- /dev/null
+++ b/2013/endoh3/try.sh
@@ -0,0 +1,116 @@
+#!/usr/bin/env bash
+#
+# try.sh - demonstrate IOCCC winner 2013/endoh3
+#
+
+# make sure CC is set so that when we do make CC="$CC" it isn't empty. Doing it
+# this way allows us to have the user specify a different compiler in an easy
+# way.
+if [[ -z "$CC" ]]; then
+    CC="cc"
+fi
+
+make CC="$CC" all >/dev/null || exit 1
+
+# clear screen after compilation so that only the entry is shown
+clear
+
+# Because there are numerous ways to run this entry we check for different tools
+# being installed in order to determine how to proceed. Even so /dev/dsp seems
+# to be uninstalled in modern systems so we check for what the author suggested
+# with that but only if the other options won't work (like SoX not installed).
+#
+SOX="$(type -P sox)"
+PADSP="$(type -P padsp)"
+RUBY="$(type -P ruby)"
+
+endoh3()
+{
+    if [[ "$#" -ne 1 ]]; then
+	echo "$0: endoh3() requires one arg, got: $#" 1>&2
+	return
+    fi
+    if [[ -f "$1" && -r "$1" ]]; then
+	if [[ -n "$SOX" ]]; then
+	    echo "$ cat $1 | ./endoh3 | $SOX -q -traw -r8000 -b8 -e unsigned-integer - -tcoreaudio" 1>&2
+	    read -r -n 1 -p "Press any key to continue: "
+	    echo 1>&2
+	    # The author suggested the form below and it simplifies the command
+	    # as well so we disable the supposed useless cat (there are no
+	    # useless cats).
+	    #
+	    # SC2002 (style): Useless cat. Consider 'cmd < file | ..' or 'cmd file | ..' instead.
+	    # https://www.shellcheck.net/wiki/SC2002
+	    # shellcheck disable=SC2002
+	    cat "$1" | ./endoh3 | "$SOX" -q -traw -r8000 -b8 -e unsigned-integer - -tcoreaudio
+	    echo 1>&2
+	elif [[ -n "$PADSP" ]]; then
+	    echo "$ cat $1 | ./endoh3 | $PADSP tee /dev/dsp > /dev/null" 1>&2
+	    read -r -n 1 -p "Press any key to continue: "
+	    echo 1>&2
+	    # The author suggested the form below and it simplifies the command
+	    # as well so we disable the supposed useless cat (there are no
+	    # useless cats).
+	    #
+	    # SC2002 (style): Useless cat. Consider 'cmd < file | ..' or 'cmd file | ..' instead.
+	    # https://www.shellcheck.net/wiki/SC2002
+	    # shellcheck disable=SC2002
+	    cat "$1" | ./endoh3 | "$PADSP" tee /dev/dsp > /dev/null
+	    echo 1>&2
+	elif [[ -n "$RUBY" ]]; then
+	    echo "$ cat $1 | ./endoh3 | $RUBY wavify.rb > $1.wav" 1>&2
+	    read -r -n 1 -p "Press any key to continue: "
+	    echo 1>&2
+	    # The author suggested the form below and it simplifies the command
+	    # as well so we disable the supposed useless cat (there are no
+	    # useless cats).
+	    #
+	    # SC2002 (style): Useless cat. Consider 'cmd < file | ..' or 'cmd file | ..' instead.
+	    # https://www.shellcheck.net/wiki/SC2002
+	    # shellcheck disable=SC2002
+	    cat "$1" | ./endoh3 | "$RUBY" wavify.rb > "$1".wav
+	    echo "Now try playing $1.wav in a program that plays WAV files." 1>&2
+	    echo 1>&2
+	else
+	    echo "Please install either SoX, ruby or padsp (from PulseAudio)." 1>&2
+	    exit 1
+	fi
+    else # no file
+	if [[ -n "$SOX" ]]; then
+	    echo "$ echo $1 | ./endoh3 | $SOX -q -traw -r8000 -b8 -e unsigned-integer - -tcoreaudio" 1>&2
+	    read -r -n 1 -p "Press any key to continue: "
+	    echo 1>&2
+	    echo "$1" | ./endoh3 | "$SOX" -q -traw -r8000 -b8 -e unsigned-integer - -tcoreaudio
+	    echo 1>&2
+	elif [[ -n "$PADSP" ]]; then
+	    echo "$ echo $1 | ./endoh3 | $PADSP tee /dev/dsp > /dev/null" 1>&2
+	    read -r -n 1 -p "Press any key to continue: "
+	    echo 1>&2
+	    echo "$1" | ./endoh3 | "$PADSP" tee /dev/dsp > /dev/null
+	    echo 1>&2
+	elif [[ -n "$RUBY" ]]; then
+	    echo "$ echo $1 | ./endoh3 | $RUBY wavify.rb > $1.wav" 1>&2
+	    read -r -n 1 -p "Press any key to continue: "
+	    echo 1>&2
+	    echo "$1" | ./endoh3 | "$RUBY" wavify.rb > "$1".wav
+	    echo "Now try playing $1.wav in a program that plays WAV files." 1>&2
+	    echo 1>&2
+	else
+	    echo "Please install either SoX, ruby or padsp (from PulseAudio)." 1>&2
+	    exit 1
+	fi
+    fi
+}
+
+if [[ "$#" -lt 1 ]]; then
+    # if we have no arg just run endoh3 with twinkle.abc and the string ABC.
+    endoh3 twinkle.abc
+    endoh3 ABC
+    endoh3 CDEFGABc
+else
+    # otherwise while we have an arg run endoh3 on it as a file or string
+    while [[ "$#" -gt 0 ]]; do
+	endoh3 "$1"
+	shift 1
+    done
+fi
diff --git a/2013/endoh4/Makefile b/2013/endoh4/Makefile
index ded40e601..7111b5cf2 100644
--- a/2013/endoh4/Makefile
+++ b/2013/endoh4/Makefile
@@ -55,9 +55,13 @@ CSTD= -std=gnu11
 #
 ARCH=
 
+# Variable to simplify redefining size
+#
+SIZE= 70,23
+
 # Defines that are needed to compile
 #
-CDEFINE=
+CDEFINE= -DS=${SIZE}
 
 # Include files that are needed to compile
 #
diff --git a/2013/endoh4/README.md b/2013/endoh4/README.md
index a4ca3d20e..7fbe88128 100644
--- a/2013/endoh4/README.md
+++ b/2013/endoh4/README.md
@@ -4,23 +4,45 @@
 make
 ```
 
+If you wish to change the size (see the [Author's remarks](#authors-remarks)
+below) you can do so with the `SIZE` variable. For instance you can do:
+
+
+```sh
+make clobber SIZE=50,50 all
+```
+
+but you can also do this directly with the [endoh4.sh](endoh4.sh) script as
+described below.
+
+
+### Bugs and (Mis)features:
+
+The current status of this entry is:
+
+```
+STATUS: INABIAF - please **DO NOT** fix
+```
+
+For more detailed information see [2013 endoh4 in bugs.md](/bugs.md#2013-endoh4).
+
 
 ## To use:
 
 ```sh
 ./endoh4 < file
-./run.sh file
+./endoh4.sh file
 ```
 
 The second form is preferable as it will temporarily make the cursor invisible
-as recommended by the author. If no file is specified in `run.sh` command line
-it will feed to the program [endoh4.c](endoh4.c).
+as recommended by the author. If no file is specified in the `./endoh4.sh` command
+line it will feed to the program [endoh4.c](endoh4.c).
 
 
 ## Try:
 
 ```sh
-./run.sh cube.txt
+./endoh4.sh cube.txt
 ```
 
 Hit ctrl-c to end the program.
@@ -30,14 +52,31 @@ The author recommends the use of xterm.
 For an example, if you are a football/soccer fan, try:
 
 ```sh
-./run.sh solids/archimedian-solid/a11-truncated-icosahedron.txt
+./endoh4.sh solids/archimedian-solid/a11-truncated-icosahedron.txt
 ```
 
+You can provide more than one file:
+
+```sh
+./endoh4.sh solids/archimedian-solid/a11-truncated-icosahedron.txt cube.txt
+```
+
+Hit ctrl-c/intr to go to the next file.
+
+If you wish to change the size to `50,50` without passing any arg:
+
+
+```sh
+SIZE=50,50 ./endoh4.sh
+```
+
+Not specifying a file feeds [endoh4.c](endoh4.c) to the program.
+
 
 ## Judges' remarks:
 
 This program is formatted as the net for a tetrahedron (hint: try feeding the
-program it's own source code like `./run.sh`).  When it runs there is an
+program it's own source code like `./endoh4.sh`).  When it runs there is an
 animation for the computation to work out the convex hull.
 
 
@@ -69,7 +108,7 @@ This simple spec involves many details.
 ### Portability
 
 I think it conforms with both C89 and C99.  I confirmed that it worked on gcc,
-clang, and tcc.  It should not be warned with `-pedantic` and `-Wextra`.
+clang, and tcc.  It should not trigger warnings with `-pedantic` and `-Wextra`.
 
 
 ### Tips
@@ -85,7 +124,7 @@ tput cnorm
 or
 
 ```sh
-./run.sh cube.txt
+./endoh4.sh cube.txt
 ```
 
 ### Bonuses
@@ -100,7 +139,7 @@ The shape of this code is the geometric net of a regular tetrahedron.
 So, try:
 
 ```sh
-./endoh4 < endoh4.c # or ./run.sh
+./endoh4 < endoh4.c # or ./endoh4.sh
 ```
 
 The [solids/](solids/) directory includes various solid data:
diff --git a/2013/endoh4/try.sh b/2013/endoh4/endoh4.sh
similarity index 60%
rename from 2013/endoh4/try.sh
rename to 2013/endoh4/endoh4.sh
index 82b34f2fc..486bb2e8f 100755
--- a/2013/endoh4/try.sh
+++ b/2013/endoh4/endoh4.sh
@@ -6,11 +6,13 @@
 # make sure CC is set so that when we do make CC="$CC" it isn't empty. Doing it
 # this way allows us to have the user specify a different compiler in an easy
 # way.
-if [[ -z "$CC" ]]; then
-    CC="cc"
-fi
+[[ -z "$CC" ]] && CC="cc"
 
-make CC="$CC" all >/dev/null || exit 1
+# let user redefine size. This requires that we clobber so that they can change
+# it each time.
+[[ -z "$SIZE" ]] && SIZE=70,23
+
+make clobber CC="$CC" SIZE="$SIZE" all >/dev/null || exit 1
 
 # clear screen after compilation so that only the entry is shown
 clear
@@ -23,11 +25,20 @@ trap "tput cnorm;echo" 0 1 2 3 15
 tput civis
 
 # run program attempting to feed it a file, if specified
-if [[ "$#" -eq 1 ]]; then
-    ./endoh4 < "$1"
+if [[ "$#" -gt 0 ]]; then
+    while [[ "$#" -gt 0 ]]; do
+	read -r -n 1 -p "Press any key to run: ./endoh4 < $1: "
+	echo 1>&2
+	./endoh4 < "$1"
+	echo 1>&2
+	shift 1
+    done
 else
     # otherwise feed the source code of the program to the program
+    read -r -n 1 -p "Press any key to run: ./endoh4 < endoh4.c: "
+    echo 1>&2
     ./endoh4 < endoh4.c
+    echo 1>&2
 fi
 
 # explicitly set cursor back just in case it's not terminated through one of the
diff --git a/2013/hou/README.md b/2013/hou/README.md
index cacaf70ac..4e2655cbd 100644
--- a/2013/hou/README.md
+++ b/2013/hou/README.md
@@ -30,17 +30,14 @@ effects should be more or less recognizable when you see 16.
 ## Try:
 
 ```sh
-./hou BIG
-./hou old_default.scene BIG
-./hou otherroom.scene
-./hou otherroom.scene NAIVE
+./try.sh
 ```
 
-Try opening the file and then let the program run a while and every so often
-reopen the file, to see how it changes. The author suggests that you leave the
-program running overnight to see what happens. If however you do not have all
-night :-) then the following JPEG files should show you what happens with some
-of the invocations above:
+Try opening the file noted by the program then let the program run a while and
+every so often reopen the file, to see how it changes. The author suggests that
+you leave the program running overnight to see what happens. If however you do
+not have all night :-) then the following JPEG files should show you what
+happens with some of the invocations above:
 
 ![./hou BIG - Luna](luna.jpg)
 
diff --git a/2013/hou/try.sh b/2013/hou/try.sh
new file mode 100755
index 000000000..d5ef47743
--- /dev/null
+++ b/2013/hou/try.sh
@@ -0,0 +1,46 @@
+#!/usr/bin/env bash
+#
+# try.sh - demonstrate IOCCC winner 2013/hou
+#
+
+# make sure CC is set so that when we do make CC="$CC" it isn't empty. Doing it
+# this way allows us to have the user specify a different compiler in an easy
+# way.
+if [[ -z "$CC" ]]; then
+    CC="cc"
+fi
+
+make CC="$CC" all >/dev/null || exit 1
+
+# clear screen after compilation so that only the entry is shown
+clear
+
+echo "2013/hou menu" 1>&2
+echo 1>&2
+echo "(0) BIG (luna.ppm)" 1>&2
+echo "(1) old_default.scene BIG (old_default.ppm)" 1>&2
+echo "(2) otherroom (otherroom.ppm)" 1>&2
+echo "(3) NAIVE otherroom (otherroom.ppm)" 1>&2
+echo 1>&2
+read -rp "Make your selection (0 - 3, anything else to quit): " mode
+
+case "$mode" in
+    0)  # BIG
+	echo "$ ./hou BIG" 1>&2
+	./hou BIG
+	;;
+    1)  # old_default BIG
+	echo "$ ./hou old_default.scene BIG" 1>&2
+	./hou old_default.scene BIG
+	;;
+    2)  # otherroom
+	echo "$ ./hou otherroom.scene" 1>&2
+	./hou otherroom.scene
+	;;
+    3)  # otherroom NAIVE
+	echo "$ ./hou otherroom.scene NAIVE" 1>&2
+	./hou otherroom.scene NAIVE
+	;;
+    *)	exit 0	
+	;;
+esac
diff --git a/2013/misaka/try.sh b/2013/misaka/try.sh
index f65668d71..4dfc3eea6 100755
--- a/2013/misaka/try.sh
+++ b/2013/misaka/try.sh
@@ -26,13 +26,13 @@ echo 1>&2
 echo 1>&2
 
 rm -f long_cat.txt same_as_long_cat.txt
-read -r -n 1 -p "Press any key to run: ./long_cat > long_cat.txt: "
+read -r -n 1 -p "Press any key to run: ./long_cat | tee long_cat.txt: "
 echo 1>&2
-./long_cat > long_cat.txt
+./long_cat | tee long_cat.txt
 echo 1>&2
-read -r -n 1 -p "Press any key to run: ./same_as_long_cat > same_as_long_cat.txt: "
+read -r -n 1 -p "Press any key to run: ./same_as_long_cat | tee same_as_long_cat.txt: "
 echo 1>&2
-./same_as_long_cat > same_as_long_cat.txt
+./same_as_long_cat | tee same_as_long_cat.txt
 echo 1>&2
 
 read -r -n 1 -p "Press any key to run: diff -s long_cat.txt same_as_long_cat.txt: "
@@ -65,8 +65,8 @@ echo 1>&2
 ./loooooooong_cat | less -EX
 echo 1>&2
 
-echo "Press any key to run: seq -f '%.0f  ' 45 | ./horizontal_cat - misaka.c"
-read -r -n 1 -p "(space = next page, q = quit): "
+echo "$ seq -f '%.0f  ' 45 | ./horizontal_cat - misaka.c"
+read -r -n 1 -p "Press any key to continue (space = next page, q = quit): "
 echo 1>&2
-seq -f '%.0f  ' 45 | ./horizontal_cat - misaka.c | less -EX
+seq -f '%.0f  ' 45 | ./horizontal_cat - misaka.c | less -rEXFK
 echo 1>&2
diff --git a/2013/morgan1/README.md b/2013/morgan1/README.md
index 10c106721..1b0e00aee 100644
--- a/2013/morgan1/README.md
+++ b/2013/morgan1/README.md
@@ -8,20 +8,17 @@ make
 ## To use:
 
 ```sh
-echo "2013/10/03" | ./morgan1
+echo "YYYY/MM/DD" | ./morgan1
 ```
 
+where `YYYY` is the four digit year, `MM` is the two digit month and `DD` is two
+digit day of the month.
+
 
 ## Try:
 
 ```sh
-echo "1985/10/28" | ./morgan1
-
-echo "1996/12/31" | ./morgan1
-
-echo "1986/03/31" | ./morgan1 # Comet Halley (look for 'Ha')
-
-echo "1997/04/01" | ./morgan1 # Comet Hale-Bopp (look for 'Hb')
+./try.sh
 ```
 
 Try pressing the arrow keys when your focus is in the window.
diff --git a/2013/morgan1/try.sh b/2013/morgan1/try.sh
new file mode 100755
index 000000000..d90c1cba5
--- /dev/null
+++ b/2013/morgan1/try.sh
@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+#
+# try.sh - demonstrate IOCCC winner 2013/morgan1
+#
+
+# make sure CC is set so that when we do make CC="$CC" it isn't empty. Doing it
+# this way allows us to have the user specify a different compiler in an easy
+# way.
+if [[ -z "$CC" ]]; then
+    CC="cc"
+fi
+
+make CC="$CC" all >/dev/null || exit 1
+
+# clear screen after compilation so that only the entry is shown
+clear
+
+read -r -n 1 -p "Press any key to run: echo 1985/10/28 | ./morgan1: "
+echo 1>&2
+echo "1985/10/28" | ./morgan1
+echo 1>&2
+
+read -r -n 1 -p "Press any key to run: echo 1996/12/31 | ./morgan1: "
+echo 1>&2
+echo "1996/12/31" | ./morgan1
+echo 1>&2
+
+read -r -n 1 -p "Press any key to run: echo 1986/03/31 | ./morgan1 # Comet Halley (look for 'Ha'): "
+echo 1>&2
+echo "1986/03/31" | ./morgan1 # Comet Halley (look for 'Ha')
+echo 1>&2
+
+read -r -n 1 -p "Press any key to run: echo 1997/04/01 | ./morgan1 # Comet Hale-Bopp (look for 'Hb'): "
+echo 1>&2
+echo "1997/04/01" | ./morgan1 # Comet Hale-Bopp (look for 'Hb')
+echo 1>&2
diff --git a/2014/deak/try.alt.sh b/2014/deak/try.alt.sh
index a7ef3e19c..b01fba5dc 100755
--- a/2014/deak/try.alt.sh
+++ b/2014/deak/try.alt.sh
@@ -18,32 +18,32 @@ echo 1>&2
 make -B X1=2 X2=-1 Y1=-2.3 alt >/dev/null || exit
 read -r -n 1 -p "Press any key to continue (space = next page, q = quit): "
 echo 1>&2
-./prog.alt | less -EXF
+./prog.alt | less -rEXFK
 
 read -r -n 1 -p "Press any key to change X1 to 3, X2 to -2 and Y1 to -3.3: "
 echo 1>&2
 make -B X1=3 X2=-2 Y1=-3.3 alt >/dev/null || exit
 read -r -n 1 -p "Press any key to continue (space = next page, q = quit): "
 echo 1>&2
-./prog.alt | less -EXF
+./prog.alt | less -rEXFK
 
 read -r -n 1 -p "Press any key to change X1 to 1, X2 to -1 and Y1 to -0.3: "
 echo 1>&2
 make -B X1=1 X2=-1 Y1=-0.3 alt >/dev/null || exit
 read -r -n 1 -p "Press any key to continue (space = next page, q = quit): "
 echo 1>&2
-./prog.alt | less -EXF
+./prog.alt | less -rEXFK
 
 read -r -n 1 -p "Press any key to change X1 to 1, X2 to -1, Y1 to -0.3 and Y2 to -1.3: "
 echo 1>&2
 make -B X1=1 X2=-1 Y1=-0.3 Y2=-1.3 alt >/dev/null || exit
 read -r -n 1 -p "Press any key to continue (space = next page, q = quit): "
 echo 1>&2
-./prog.alt | less -EXF
+./prog.alt | less -rEXFK
 
 read -r -n 1 -p "Press any key to try the original configuration: "
 echo 1>&2
 make clobber alt >/dev/null || exit 1
 read -r -n 1 -p "Press any key to continue (space = next page, q = quit): "
 echo 1>&2
-./prog.alt | less -EXF
+./prog.alt | less -rEXFK
diff --git a/2014/endoh1/try.sh b/2014/endoh1/try.sh
index a8fdc6a43..efc0b57dd 100755
--- a/2014/endoh1/try.sh
+++ b/2014/endoh1/try.sh
@@ -17,7 +17,7 @@ clear
 
 read -r -n 1 -p "Press any key to show prog.c (space = next page, q = quit): "
 echo 1>&2
-less -EXF prog.c
+less -rEXFK prog.c
 echo 1>&2
 
 read -r -n 1 -p "Press any key to run: ./prog: "
diff --git a/2014/endoh2/Makefile b/2014/endoh2/Makefile
index 4befe3606..120097ebf 100644
--- a/2014/endoh2/Makefile
+++ b/2014/endoh2/Makefile
@@ -201,7 +201,7 @@ clean:
 	fi
 
 clobber: clean
-	${RM} -f ${TARGET} ${ALT_TARGET}
+	${RM} -f ${TARGET} ${ALT_TARGET} ioccc ioccc.c hello hello.c
 	${RM} -rf *.dSYM
 	@-if [ -e sandwich ]; then \
 	    ${RM} -f sandwich; \
diff --git a/2014/endoh2/try.sh b/2014/endoh2/try.sh
index 0fbfd5a61..42a4cdf7f 100755
--- a/2014/endoh2/try.sh
+++ b/2014/endoh2/try.sh
@@ -15,14 +15,14 @@ make CC="$CC" all >/dev/null || exit 1
 # clear screen after compilation so that only the entry is shown
 clear
 
-read -r -n 1 -p "Press any key to run: echo Hello | ./prog: "
+read -r -n 1 -p "Press any key to run: echo Hello | ./prog (space = next page, q = quit): "
 echo 1>&2
-echo Hello | ./prog
+echo Hello | ./prog | less -rEXFK
 echo 1>&2
 
-read -r -n 1 -p "Press any key to run: echo IOCCC | ./prog: "
+read -r -n 1 -p "Press any key to run: echo IOCCC | ./prog (space = next page, q = quit): "
 echo 1>&2
-echo IOCCC | ./prog
+echo IOCCC | ./prog | less -rEXFK
 echo 1>&2
 
 read -r -n 1 -p "Press any key to run: echo Hello | ./prog > hello.c: "
@@ -30,6 +30,13 @@ echo 1>&2
 echo Hello | ./prog > hello.c
 echo 1>&2
 
+# we don't use tee(1) above as it makes the message longer and it's not strictly
+# necessary
+read -r -n 1 -p "Press any key to show hello.c (space = next page, q = quit): "
+echo 1>&2
+less -rEXFK hello.c
+echo 1>&2
+
 read -r -n 1 -p "Press any key to compile hello.c: "
 echo 1>&2
 make hello >/dev/null
diff --git a/2014/maffiodo1/giana.sh b/2014/maffiodo1/giana.sh
index 9fa2961af..2960e81ad 100755
--- a/2014/maffiodo1/giana.sh
+++ b/2014/maffiodo1/giana.sh
@@ -23,6 +23,12 @@ if [[ -z "$COLS" ]]; then
 	COLS="640"
 fi
 
-# ^---------^ SC2002 (style): Useless cat. Consider 'cmd < file | ..' or 'cmd file | ..' instead.
+# We disable the useless cat warning of ShellCheck because the to use
+# instructions have it and for such a long command line it's easier to deal
+# with. Besides that it is dubious to claim there is such a thing as useless
+# cat.
+#
+# SC2002 (style): Useless cat. Consider 'cmd < file | ..' or 'cmd file | ..' instead.
+# https://www.shellcheck.net/wiki/SC2002
 # shellcheck disable=SC2002
 cat giana.level | ./prog "$COLS" "$ROWS" 1000 300 192 168 giana.rgba giana8.wav 5459393
diff --git a/2014/maffiodo1/mario.sh b/2014/maffiodo1/mario.sh
index 28e462c1d..7e9cb1a72 100755
--- a/2014/maffiodo1/mario.sh
+++ b/2014/maffiodo1/mario.sh
@@ -23,6 +23,12 @@ if [[ -z "$COLS" ]]; then
 	COLS="640"
 fi
 
-# ^---------^ SC2002 (style): Useless cat. Consider 'cmd < file | ..' or 'cmd file | ..' instead.
+# We disable the useless cat warning of ShellCheck because the to use
+# instructions have it and for such a long command line it's easier to deal
+# with. Besides that it is dubious to claim there is such a thing as useless
+# cat.
+#
+# SC2002 (style): Useless cat. Consider 'cmd < file | ..' or 'cmd file | ..' instead.
+# https://www.shellcheck.net/wiki/SC2002
 # shellcheck disable=SC2002
 cat mario.level | ./prog "$COLS" "$ROWS" 800 300 128 144 mario.rgba mario8.wav 10343679 && telnet telehack.com 23
diff --git a/2014/maffiodo2/try.sh b/2014/maffiodo2/try.sh
index bad1431ef..5685ad202 100755
--- a/2014/maffiodo2/try.sh
+++ b/2014/maffiodo2/try.sh
@@ -15,44 +15,33 @@ make CC="$CC" all >/dev/null || exit 1
 # clear screen after compilation so that only the entry is shown
 clear
 
-echo "$ cat image.rgb | ./prog '  .,:;!$#@'" 1>&2
-read -r -n 1 -p "Press any key to run command (space = next page, q = quit): "
+echo "$ ./prog '  .,:;!$#@' < image.rgb" 1>&2
+read -r -n 1 -p "Press any key to continue (space = next page, q = quit): "
+echo 1>&2
+./prog '  .,:;!$#@' < image.rgb | less -rEXFK
 echo 1>&2
-# ^-------^ SC2002 (style): Useless cat. Consider 'cmd < file | ..' or 'cmd file | ..' instead.
-# shellcheck disable=SC2002
-cat image.rgb | ./prog '  .,:;!$#@' | less -EXF
 
-echo "$ cat image.rgb | ./prog '  .:;Y0'" 1>&2
-read -r -n 1 -p "Press any key to run command (space = next page, q = quit): "
+echo "$ ./prog \"  .:;Y0\" < image.rgb" 1>&2
+read -r -n 1 -p "Press any key to continue (space = next page, q = quit): "
 echo 1>&2
-# ^-------^ SC2002 (style): Useless cat. Consider 'cmd < file | ..' or 'cmd file | ..' instead.
-# shellcheck disable=SC2002
-cat image.rgb | ./prog "  .:;Y0" | less -EXF
+./prog "  .:;Y0" < image.rgb | less -rEXFK
 
-echo "$ cat image.rgb | ./prog ' :1'" 1>&2
-read -r -n 1 -p "Press any key to run command (space = next page, q = quit): "
+echo "$ ./prog ' :1' < image.rgb" 1>&2
+read -r -n 1 -p "Press any key to continue (space = next page, q = quit): "
 echo 1>&2
-# ^-------^ SC2002 (style): Useless cat. Consider 'cmd < file | ..' or 'cmd file | ..' instead.
-# shellcheck disable=SC2002
-cat image.rgb | ./prog ' :1' | less -EXF
+./prog ' :1' < image.rgb | less -rEXFK
 
-echo "$ cat image.rgb | ./prog '  .:;Y0'" 1>&2
-read -r -n 1 -p "Press any key to run command (space = next page, q = quit): "
+echo "$ ./prog '  .:;Y0' < image.rgb" 1>&2
+read -r -n 1 -p "Press any key to continue (space = next page, q = quit): "
 echo 1>&2
-# ^-------^ SC2002 (style): Useless cat. Consider 'cmd < file | ..' or 'cmd file | ..' instead.
-# shellcheck disable=SC2002
-cat image.rgb | ./prog '  .:;Y0' | less -EXF
+./prog '  .:;Y0' < image.rgb | less -rEXFK
 
-echo "$ cat image.rgb | ./prog ' .:-=+*#%@'" 1>&2
-read -r -n 1 -p "Press any key to run command (space = next page, q = quit): "
+echo "$ ./prog ' .:-=+*#%@' < image.rgb" 1>&2
+read -r -n 1 -p "Press any key to continue (space = next page, q = quit): "
 echo 1>&2
-# ^-------^ SC2002 (style): Useless cat. Consider 'cmd < file | ..' or 'cmd file | ..' instead.
-# shellcheck disable=SC2002
-cat image.rgb | ./prog ' .:-=+*#%@' | less -EXF
+./prog ' .:-=+*#%@' < image.rgb | less -rEXFK
 
-echo "$ cat image.rgb | ./prog '   .,:!-iots&8%#@$'" 1>&2
-read -r -n 1 -p "Press any key to run command (space = next page, q = quit): "
+echo "$ ./prog '   .,:!-iots&8%#@$' < image.rgb" 1>&2
+read -r -n 1 -p "Press any key to continue (space = next page, q = quit): "
 echo 1>&2
-# ^-------^ SC2002 (style): Useless cat. Consider 'cmd < file | ..' or 'cmd file | ..' instead.
-# shellcheck disable=SC2002
-cat image.rgb | ./prog '   .,:!-iots&8%#@$' | less -EXF
+./prog '   .,:!-iots&8%#@$' < image.rgb | less -rEXFK
diff --git a/2014/morgan/try.sh b/2014/morgan/try.sh
index a464cbb3e..9bb056dcd 100755
--- a/2014/morgan/try.sh
+++ b/2014/morgan/try.sh
@@ -15,31 +15,35 @@ make CC="$CC" all >/dev/null || exit 1
 # clear screen after compilation so that only the entry is shown
 clear
 
-
-echo "$ cp -f prog morgan" 1>&2
+read -r -n 1 -p "Press any key to run: cp -f prog morgan: "
+echo 1>&2
 cp -f prog morgan
-echo "$ ls" 1>&2
-ls
+echo 1>&2
+
+read -r -n 1 -p "Press any key to run: rm -vf prog: "
+echo 1>&2
+rm -vf prog
+echo 1>&2
+read -r -n 1 -p "Press any key to run: ./morgan prog: "
+echo 1>&2
+./morgan prog
+echo 1>&2
+
+read -r -n 1 -p "Press any key to compare prog and morgan: "
+echo 1>&2
+diff -s prog morgan
+echo 1>&2
 
 read -r -n 1 -p "Press any key to run: ./morgan all install: "
 echo 1>&2
 ./morgan all install
 echo 1>&2
-echo "$ ls" 1>&2
-ls
+
+read -r -n 1 -p "Press any key to run: ./morgan love haste waste supernova: "
+echo 1>&2
+./morgan love haste waste supernova
 echo 1>&2
 
-read -r -n 1 -p "Press any key to run: ./prog love haste waste supernova: "
+read -r -n 1 -p "Press any key to run: ./morgan magic: "
 echo 1>&2
-./prog love haste waste supernova
-echo 1>&2
-echo "$ ls" 1>&2
-ls
-echo 1>&2
-
-read -r -n 1 -p "Press any key to run: ./prog magic: "
-echo 1>&2
-./prog magic
-echo 1>&2
-echo "$ ls" 1>&2
-ls
+./morgan magic
diff --git a/2014/sinon/README.md b/2014/sinon/README.md
index 786e5be72..60a9b21e2 100644
--- a/2014/sinon/README.md
+++ b/2014/sinon/README.md
@@ -8,7 +8,9 @@ make
 ## To use:
 
 ```sh
-cp -f prog.c run.c; ./hecate.sh
+./hecate.sh
+
+./glock.sh
 ```
 
 
@@ -33,7 +35,7 @@ or unspecified behavior?
 
 ### Summary
 
-Sinon is a game of timing, the goal is to eliminate all enemies in
+`Sinon` is a game of timing, the goal is to eliminate all enemies in
 under one minute.
 
 To start, compile and run the program.  To resume, compile and run the
@@ -48,7 +50,7 @@ gcc -O2 run.c -o run && ./run | tee run.c
 
 ### Details
 
-Sinon is played by compiling and running the output repeatedly.  Two
+`Sinon` is played by compiling and running the output repeatedly.  Two
 factors determine what actions are taken:
 
 + Time since last compilation.
@@ -58,7 +60,7 @@ If you fire too quickly, the weapon will jam.  If you fire too slowly,
 you will not be able to eliminate all the enemies in time.  Thus the
 primary objective of the game is to time your compilations just right.
 
-Sinon has two weapons that are selected based on compiler optimization
+`Sinon` has two weapons that are selected based on compiler optimization
 level:
 
 + "gcc -O2" or "clang -O2" will fire Hecate II, a powerful rifle that
@@ -80,7 +82,7 @@ compilers.
 
 ### Compatibility
 
-Sinon has been tested and verified to work on these platforms:
+`Sinon` has been tested and verified to work on these platforms:
 
 + gcc 4.4.3 on Linux.
 + gcc 4.4.5 on Linux.
@@ -93,14 +95,14 @@ Sinon has been tested and verified to work on these platforms:
 + tcc 0.9.25 on JS/Linux (no optimization, so only "hard" mode is
   available).
 
-Sinon is intended to be played in a 80x25 terminal.
+`Sinon` is intended to be played in a 80x25 terminal.
 
 ### Miscellaneous features
 
-Sinon might be the first game that uses compiler optimization level as
+`Sinon` might be the first game that uses compiler optimization level as
 a primary input.
 
-Sinon has a demo mode that plays the game automatically.  Make sure
+`Sinon` has a demo mode that plays the game automatically.  Make sure
 that there are no files named "run" and "run.c" in current directory
 (they will be overwritten) and run:
 
@@ -110,9 +112,9 @@ perl prog.c | bash
 
 File size and CRC32 of [prog.c](prog.c) are embedded in line 7.
 
-Process for making Sinon is included in [spoiler.html](spoiler.html).
+Process for making `Sinon` is included in [spoiler.html](spoiler.html).
 
-Layout of this code is based on Asada Shino, also known as "Sinon",
+Layout of this code is based on Asada Shino, also known as "`Sinon`",
 from Sword Art Online.
 
 
diff --git a/2014/sinon/glock.sh b/2014/sinon/glock.sh
index 4e32ed664..ae96f52e6 100755
--- a/2014/sinon/glock.sh
+++ b/2014/sinon/glock.sh
@@ -1,2 +1,2 @@
 #!/usr/bin/env bash
-cc -O0 run.c -o run > /dev/null && ./run | tee run.c
+cp -f prog.c run.c && cc -O0 run.c -o run > /dev/null && ./run | tee run.c
diff --git a/2014/sinon/hecate.sh b/2014/sinon/hecate.sh
index 3f1ff87db..f9e1ab390 100755
--- a/2014/sinon/hecate.sh
+++ b/2014/sinon/hecate.sh
@@ -1,2 +1,2 @@
 #!/usr/bin/env bash
-cc -O2 run.c -o run > /dev/null && ./run | tee run.c
+cp -f prog.c run.c && cc -O2 run.c -o run > /dev/null && ./run | tee run.c
diff --git a/2014/sinon/try.sh b/2014/sinon/try.sh
index a29de9df2..0a63aa266 100755
--- a/2014/sinon/try.sh
+++ b/2014/sinon/try.sh
@@ -15,9 +15,32 @@ make CC="$CC" all >/dev/null || exit 1
 # clear screen after compilation so that only the entry is shown
 clear
 
+# find out if perl is installed
+PERL="$(type -P perl)"
+if [[ -n "$PERL" ]]; then
+    read -r -n 1 -p "Press any key to play the game automatically ($PERL prog.c | bash): "
+    echo 1>&2
+    "$PERL" prog.c | bash
+    echo 1>&2
+fi
+
 while :; do
 
-    cp -f prog.c run.c; ./hecate.sh; ./glock.sh; sleep 3; ./glock.sh; sleep 1; ./hecate.sh
+    read -r -n 1 -p "Press any key to run: ./hecate.sh: "
+    echo 1>&2
+    ./hecate.sh
+
+    read -r -n 1 -p "Press any key to run: ./glock.sh: "
+    echo 1>&2
+    ./glock.sh
+
+    read -r -n 1 -p "Press any key to run: ./glock.sh: "
+    echo 1>&2
+    ./glock.sh
+
+    read -r -n 1 -p "Press any key to run: ./hecate.sh: "
+    echo 1>&2
+    ./hecate.sh
 
     read -r -p "Do you want to try again (Y/N)? "
     if [[ "$REPLY" != "y" && "$REPLY" != "Y" ]]; then
diff --git a/2015/yang/.gitignore b/2015/yang/.gitignore
index ebe9519d9..fb50e799d 100644
--- a/2015/yang/.gitignore
+++ b/2015/yang/.gitignore
@@ -4,6 +4,8 @@
 indent
 indent.c
 indent.o
+output
+output.c
 prog
 prog_c11
 prog_c90
diff --git a/2015/yang/Makefile b/2015/yang/Makefile
index 5cc6fa4ae..2fcb15a84 100644
--- a/2015/yang/Makefile
+++ b/2015/yang/Makefile
@@ -230,7 +230,7 @@ clean:
 	fi
 
 clobber: clean
-	${RM} -f ${TARGET} ${ALT_TARGET}
+	${RM} -f ${TARGET} ${ALT_TARGET} output output.c
 	${RM} -rf *.dSYM
 	@-if [ -e sandwich ]; then \
 	    ${RM} -f sandwich; \
diff --git a/2018/burton1/.gitignore b/2018/burton1/.gitignore
index f830336a5..41faac2ca 100644
--- a/2018/burton1/.gitignore
+++ b/2018/burton1/.gitignore
@@ -7,3 +7,4 @@ indent.o
 prog
 prog.alt
 prog.orig
+scripthd
diff --git a/2018/burton1/Makefile b/2018/burton1/Makefile
index 493c22607..61cb992bf 100644
--- a/2018/burton1/Makefile
+++ b/2018/burton1/Makefile
@@ -111,7 +111,7 @@ PROG= prog
 #
 OBJ= ${PROG}.o
 CSRC= ${PROG}.o
-DATA= scripthd
+DATA= scripthd.sh
 TARGET= ${PROG}
 #
 ALT_OBJ= ${PROG}.alt.o
@@ -206,7 +206,7 @@ clean:
 	fi
 
 clobber: clean
-	${RM} -f ${TARGET} ${ALT_TARGET}
+	${RM} -f ${TARGET} ${ALT_TARGET} scripthd
 	${RM} -rf *.dSYM
 	@-if [ -e sandwich ]; then \
 	    ${RM} -f sandwich; \
diff --git a/bin/all-run.sh b/bin/all-run.sh
index e49ca4ef8..2bee8e0e4 100755
--- a/bin/all-run.sh
+++ b/bin/all-run.sh
@@ -42,7 +42,7 @@ fi
 shopt -s nullglob	# enable expanded to nothing rather than remaining unexpanded
 shopt -u failglob	# disable error message if no matches are found
 shopt -u dotglob	# disable matching files starting with .
-shopt -s globskipdots	# enable never matching . nor ..
+shopt -s globskipdots	# enable never matching . or ..
 shopt -u nocaseglob	# disable strict case matching
 shopt -u extglob	# enable extended globbing patterns
 shopt -s globstar	# enable ** to match all files and zero or more directories and subdirectories
diff --git a/bugs.md b/bugs.md
index aa081950b..25d8d0b16 100644
--- a/bugs.md
+++ b/bugs.md
@@ -3114,6 +3114,15 @@ A workaround is inserting a whitespace: `C2 E2`.
 --
 
 
+## 2013 endoh4
+
+### STATUS: INABIAF - please **DO NOT** fix
+### Source code: [2013/endoh4/endoh4.c](2013/endoh4/endoh4.c)
+### Information: [2013/endoh4/README.md](2013/endoh4/README.md)
+
+Invalid input files will very likely crash the program.
+
+
 
 ## 2013 hou
 
diff --git a/thanks-for-help.md b/thanks-for-help.md
index ba05f795d..3ee1fb2fe 100644
--- a/thanks-for-help.md
+++ b/thanks-for-help.md
@@ -3977,13 +3977,26 @@ not found.
 The entry can still be enjoyed if you do not have these tools, however.
 
 
+## <a name="2013_endoh3"></a>[2013/endoh3](/2013/endoh3/endoh3.c) ([README.md](/2013/endoh3/README.md))
+
+[Cody](#cody) added the [try.sh](/2013/endoh3/try.sh) script.
+
+Cody also (out of an abundance of caution for `clang(1)` which is strict with
+arg type and count to `main()`) added a second (unused) arg to `main()`.
+
+
 ## <a name="2013_endoh4"></a>[2013/endoh4](/2013/endoh4/endoh4.c) ([README.md](/2013/endoh4/README.md))
 
-[Cody](#cody) added the [try.sh](/2013/endoh4/try.sh) script which temporarily
+[Cody](#cody) added the [endoh4.sh](/2013/endoh4/endoh4.sh) script which temporarily
 turns off the cursor as suggested by the author, with the addition that if no
 file is specified it will feed the source code [endoh4.c](/2013/endoh4/endoh4.c)
 to the program rather than the file specified. It does not try and detect if the
-file exists or can be read as that will be handled by the shell/program.
+file exists or can be read as that will be handled by the shell/program. One may
+pass more than one file to the script.
+
+Cody also made it easier to redefine the size at compilation time (see the
+author's remarks for more details on what this means). The `endoh4.sh` script
+allows one to redefine it as well.
 
 
 ## <a name="2013_hou"></a>[2013/hou](/2013/hou/hou.c) ([README.md](/2013/hou/README.md))
@@ -4018,6 +4031,8 @@ Further, after the file `2013/hou/doc/example.markdown` was moved to
 [2013/hou/doc/example.md](/2013/hou/doc/example.md) to match the rest of the repo
 this broke `make` which Cody also fixed.
 
+Cody also added the [try.sh](/2013/hou/try.sh) script.
+
 
 ## <a name="2013_mills"></a>[2013/mills](/2013/mills/mills.c) ([README.md)[2013/mills/README.md))
 
@@ -4039,6 +4054,8 @@ Firefox both had the problem.
 [Cody](#cody) added explicit linking of libm (`-lm`) as not all systems do this
 implicitly (Linux doesn't seem to but macOS does).
 
+Cody also added the [try.sh](/2013/morgan1/try.sh) script.
+
 
 ## <a name="2013_robison"></a>[2013/robison](/2013/robison/robison.c) ([README.md](/2013/robison/README.md))
 
@@ -4134,9 +4151,15 @@ provided by the author.
 once did. The problem is that it expects a certain file name which was
 `sinon.c`. The code now refers to `prog.c`.
 
-Cody also added the [try.sh](/2014/sinon/try.sh) script which is an improvement
-over what was once suggested in that when it's over it will ask you if you wish
-to try again, say because of a jam (see the README.md file for details).
+Cody also fixed the scripts [glock.sh](/2014/sinon/glock.sh) and
+[hecate.sh](/2014/sinon/hecate.sh) which did not work after running either once
+as they compile `run.c` and then do `./run | tee run.c` which overwrites it with
+output that is not code.
+
+Cody also added the [try.sh](/2014/sinon/try.sh) script that will first (if perl
+is installed) run the demo mode and then after that it will run the above noted
+scripts in a loop until the user says they do not want to try again (or they
+kill it). This is done this way in case it jams (see README.md for details).
 
 
 ## <a name="2014_skeggs"></a>[2014/skeggs](/2014/skeggs/prog.c) ([README.md](/2014/skeggs/README.md))