diff --git a/2015/muth/README.md b/2015/muth/README.md
index 336f7f649..dce9bcf41 100644
--- a/2015/muth/README.md
+++ b/2015/muth/README.md
@@ -15,13 +15,7 @@ make -B [MACHINE=your_machine.h] [TAPE=your_tape.h] [X=[0|1|2|3|4|5|6|7|8|9]] [V
 ### Try:
 
 ```sh
-make -B V=2 run
-
-strings prog | grep '(,)'
-
-make -B MACHINE=machine_times2.h TAPE=tape_five.h V=1 run
-
-make -B MACHINE=machine_chaos_5_2.h X=5 run
+./try.sh
 ```
 
 
@@ -51,21 +45,28 @@ even without conditionals and recursive file inclusion as some kind of a
 - make target `run` runs `./prog` and filters a little statistics out of the verbose output
 - `X` (defaults to 3) sets the maximum number of steps: *M*(`X`) ~ 8<sup>`X`</sup>
 
+
 ### Limitations
 
-If the machine does not halt after *M*(`X`) steps, you will see unexpanded macros in the output.
+If the machine does not halt after *M*(`X`) steps, you will see unexpanded
+macros in the output.
+
 
 ### Compiler warnings
 
-If `V=1` or `V=2` is used, you may see "`warning: string length is greater than the length '4095' ISO C99 compilers are required to support`".
+If `V=1` or `V=2` is used, you may see "`warning: string length is greater than
+the length '4095' ISO C99 compilers are required to support`".
+
 
 ### Programming
 
-Implementing your own Turing machine is easy. Take a look at the supplied header files for examples.
+Implementing your own Turing machine is easy. Take a look at the supplied header
+files for examples.
+
 
 #### Tape Symbols
 
-Every symbol used (except "`_`") must be explicitly declared using
+Every symbol used (except `_`) must be explicitly declared using
 
 ```c
 #define sym_SYMBOL(sym, _SYMBOL) sym
@@ -77,9 +78,11 @@ Example:
 #define sym_1(sym, _1) sym
 ```
 
+
 #### Tape
 
-The initial content of the tape must be defined in the tape header using a triple like:
+The initial content of the tape must be defined in the tape header using a
+triple like:
 
 ```c
 #define tape ((((,),...l2), l1), c, (r1, (r2..., (,))))
@@ -89,26 +92,32 @@ The initial content of the tape must be defined in the tape header using a tripl
 - `c` is the symbol at the current position
 - `r1`, `r2`, ... are the symbols to the right
 
-The empty pairs "`(,)`" represent the continuations of the tape, filled with underscore symbols ("`_`"). They are expanded on demand.
+The empty pairs `(,)` represent the continuations of the tape, filled with
+underscore symbols (`_`). They are expanded on demand.
+
 
 #### State Machine
 
 All transitions are defined in the machine header using the syntax
 
-	#define CURRENT_SCANNED (WRITE, MOVEMENT, NEXT)
+```
+#define CURRENT_SCANNED (WRITE, MOVEMENT, NEXT)
+```
 
 where
 
-- `CURRENT` is the current state
-- `SCANNED` is the symbol at the current position
-- the whitespace before the parentheses is significant
-- `WRITE` is the symbol to be written to the tape
-- `MOVEMENT` is "`L`" for left, "`R`" for right, or nothing
-- `NEXT` is the next state
+- `CURRENT` is the current state.
+- `SCANNED` is the symbol at the current position.
+- The whitespace before the parentheses is significant.
+- `WRITE` is the symbol to be written to the tape.
+- `MOVEMENT` is `L` for left, `R` for right; don't specify anything if you
+want no movement.
+- `NEXT` is the next state.
 
-There must be a state "`A`" defined, which becomes the initial state of the machine.
+There must be a state `A` defined, which becomes the initial state of the
+machine.
 
-To halt the machine, use the keyword "`break`" as in
+To halt the machine, use the keyword `break` as in
 
 ```c
 #define A_1 (2, break)
diff --git a/2015/muth/try.sh b/2015/muth/try.sh
new file mode 100755
index 000000000..022d3d441
--- /dev/null
+++ b/2015/muth/try.sh
@@ -0,0 +1,46 @@
+#!/usr/bin/env bash
+#
+# try.sh - demonstrate IOCCC winner 2015/muth
+#
+
+# 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="$CC" all >/dev/null || exit 1
+
+# clear screen after compilation so that only the entry is shown
+clear
+
+
+echo "$ make -B V=2 run" 1>&2
+read -r -n 1 -p "Press any key to continue (space = next page, q = quit): "
+echo 1>&2
+make CC="${CC}" -B V=2 run | less -EXF
+echo 1>&2
+echo 1>&2
+
+echo "$ strings prog | grep '(,)'" 1>&2
+read -r -n 1 -p "Press any key to continue (space = next page, q = quit): "
+echo 1>&2
+strings prog | grep '(,)' | less -EXF
+echo 1>&2
+echo 1>&2
+
+for h in machine*.h; do
+    for t in tape*.h; do
+	echo "$ make CC=\"\${CC}\" -B MACHINE=$h TAPE=$t V=1 run" 1>&2
+	read -r -n 1 -p "Press any key to continue (q to exit): "
+	if [[ "$REPLY" == "q" || "$REPLY" == "Q" ]]; then
+	    exit 0
+	fi
+	echo 1>&2
+	make -B MACHINE="$h" TAPE="$t" V=1 run
+	echo 1>&2
+	echo 1>&2
+    done
+done
+
diff --git a/2015/yang/README.md b/2015/yang/README.md
index fdae97a93..f91ff51b3 100644
--- a/2015/yang/README.md
+++ b/2015/yang/README.md
@@ -8,35 +8,16 @@ make
 ## To use:
 
 ```sh
-echo Some text | ./prog\
+echo Some text | ./prog
 ```
 
 
 ### Try:
 
 ```sh
-echo IOCCC 2015 | ./prog | tee output.c
-make output
-./output
-
-echo IOCCC 2015 | ./prog_c11 | tee output.c
-make output
-./output
-
-echo IOCCC 2015 | ./prog_c++98 | tee output.c
-make output
-./output
+./try.sh
 ```
 
-### Also try:
-
-```sh
-./prog
-
-```
-
-Keep pressing enter to see more output. Send EOF to terminate.
-
 
 ## Judges' remarks:
 
@@ -54,7 +35,7 @@ so you need not worry about this.
 ## Author's remarks:
 
 `Fuuko` is a [sea star](https://en.wikipedia.org/wiki/Starfish) generator.  Feed
-her some input through `stdin` to get lots of sea star patterns in `stdout`.
+her some input through `stdin` to get lots of sea star patterns on `stdout`.
 
 ```sh
 cc -O3 -std=c90 fuuko.c -lm -o fuuko_c90
@@ -70,7 +51,7 @@ echo IOCCC | ./fuuko_c99 > output_c99.c
 ```
 
 Don't like [sea stars](https://en.wikipedia.org/wiki/Starfish)?  Use a C++98
-compiler to get [dango](https://en.wikipedia.org/wiki/Dango) instead.
+compiler to get a [dango](https://en.wikipedia.org/wiki/Dango) instead.
 
 ```sh
 g++ -O3 -std=c++98 fuuko.c -lm -o fuuko_cpp98
@@ -102,6 +83,7 @@ filled with pointer dereferences (C stars).
 Next time people ask you for a few pointers on C, you can run their
 question through `Fuuko` and give them pointers all day long.
 
+
 ### Compatibility
 
 `Fuuko` has been tested under these environments:
@@ -117,6 +99,7 @@ question through `Fuuko` and give them pointers all day long.
 - clang 3.4.1 on Linux
 - tcc 0.9.25 on JS/Linux (C99 only)
 
+
 ### Features
 
 The most obscure parts are in detecting the subtle differences in
diff --git a/2015/yang/try.sh b/2015/yang/try.sh
new file mode 100755
index 000000000..966f95c06
--- /dev/null
+++ b/2015/yang/try.sh
@@ -0,0 +1,85 @@
+#!/usr/bin/env bash
+#
+# try.sh - demonstrate IOCCC winner 2015/yang
+#
+
+# 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="$CC" everything >/dev/null || exit 1
+
+# clear screen after compilation so that only the entry is shown
+clear
+
+
+echo "$ echo IOCCC 2015 | ./prog | tee output.c | less" 1>&2
+read -r -n 1 -p "Press any key to continue (space = next page, q = quit): "
+echo 1>&2
+echo IOCCC 2015 | ./prog | tee output.c | less -EXF
+echo "$ make CC=\"${CC}\" output" 1>&2
+make CC="${CC}" output 2>/dev/null
+read -r -n 1 -p "Press any key to run: ./output: "
+echo 1>&2
+./output
+
+echo 1>&2
+echo "$ echo IOCCC 2015 | ./prog_c90 | tee output.c | less" 1>&2
+read -r -n 1 -p "Press any key to show sea star (space = next page, q = quit): "
+echo 1>&2
+echo IOCCC 2015 | ./prog_c90 | tee output.c | less -EXF
+echo "$ make CC=\"${CC}\" output" 1>&2
+make CC="${CC}" output 2>/dev/null
+read -r -n 1 -p "Press any key to run: ./output: "
+echo 1>&2
+./output
+
+echo 1>&2
+echo "$ echo IOCCC 2015 | ./prog_c99 | tee output.c | less" 1>&2
+read -r -n 1 -p "Press any key to show sea star with eyes (space = next page, q = quit): "
+echo 1>&2
+echo IOCCC 2015 | ./prog_c99 | tee output.c | less -EXF
+echo "Did you notice the 'rabbit' in there?" 1>&2
+read -r -n 1 -p "Press any key to continue: "
+echo 1>&2
+echo "$ make CC=\"${CC}\" output" 1>&2
+make CC="${CC}" output 2>/dev/null
+read -r -n 1 -p "Press any key to run: ./output: "
+echo 1>&2
+./output
+
+echo "$ echo IOCCC 2015 | ./prog_cpp98 | tee output.c | less" 1>&2
+read -r -n 1 -p "Press any key to show dango (space = next page, q = quit): "
+echo IOCCC 2015 | ./prog_cpp98 | tee output.c | less -EXF
+echo "$ make CC=\"${CC}\" output" 1>&2
+make CC="${CC}" output 2>/dev/null
+read -r -n 1 -p "Press any key to run: ./output: "
+echo 1>&2
+./output
+
+echo "$ echo IOCCC 2015 | ./prog_cpp11 | tee output.c | less" 1>&2
+read -r -n 1 -p "Press any key to show circles/Swiss cheese (space = next page, q = quit): "
+echo IOCCC 2015 | ./prog_cpp11 | tee output.c | less -EXF
+echo "$ make CC=\"${CC}\" output" 1>&2
+make CC="${CC}" output 2>/dev/null
+read -r -n 1 -p "Press any key to run: ./output: "
+echo 1>&2
+./output
+
+echo 1>&2
+echo "$ echo IOCCC 2015 | ./prog_c11 | tee output.c | less" 1>&2
+read -r -n 1 -p "Press any key to show no extra pattern (space = next page, q = quit): "
+echo 1>&2
+echo IOCCC 2015 | ./prog_c11 | tee output.c | less -EXF
+echo "$ make CC=\"${CC}\" output" 1>&2
+make CC="${CC}" output 2>/dev/null
+read -r -n 1 -p "Press any key to run: ./output: "
+echo 1>&2
+./output
+
+read -r -n 1 -p "Press enter key repeatedly to get more output (send EOF to quit): "
+./prog
+exit 0
diff --git a/thanks-for-fixes.md b/thanks-for-fixes.md
index c21981d26..bcc597b33 100644
--- a/thanks-for-fixes.md
+++ b/thanks-for-fixes.md
@@ -3803,6 +3803,11 @@ simply typing `make back_to` or `make mullender`.
 (Linux doesn't seem to but macOS does).
 
 
+## [2015/muth](2015/muth/prog.c) ([README.md](2015/muth/README.md))
+
+[Cody](#cody) added the [try.sh](2015/muth/try.sh) script.
+
+
 ## [2015/yang](2015/yang/prog.c) ([README.md](2015/yang/README.md]))
 
 [Cody](#cody) fixed an unfortunate typo in the Makefile that was preventing some of the
@@ -3811,6 +3816,8 @@ files from compiling properly, trying instead to compile already compiled code.
 He also added explicit linking of libm (`-lm`) for systems that do not do this
 (Linux seems to not but macOS does).
 
+He also added the [try.sh](2015/yang/try.sh) script.
+
 
 # <a name="2018"></a>2018