diff --git a/2000/tomx/Makefile b/2000/tomx/Makefile
index c804cfbd1..e2b1eb053 100644
--- a/2000/tomx/Makefile
+++ b/2000/tomx/Makefile
@@ -204,7 +204,7 @@ clean:
 
 clobber: clean
 	${RM} -f ${TARGET} ${ALT_TARGET}
-	${RM} -rf *.dSYM
+	${RM} -rf *.dSYM mkentry
 	@-if [ -e sandwich ]; then \
 	    ${RM} -f sandwich; \
 	    echo 'ate sandwich'; \
diff --git a/2001/herrmann1/Makefile b/2001/herrmann1/Makefile
index f1c5be169..3fb39c5df 100644
--- a/2001/herrmann1/Makefile
+++ b/2001/herrmann1/Makefile
@@ -201,7 +201,7 @@ clean:
 
 clobber: clean
 	${RM} -f ${TARGET} ${ALT_TARGET}
-	${RM} -rf *.dSYM
+	${RM} -rf *.dSYM error herrmann1-1.c herrmann1-3.c
 	@-if [ -e sandwich ]; then \
 	    ${RM} -f sandwich; \
 	    echo 'ate sandwich'; \
diff --git a/2001/westley/Makefile b/2001/westley/Makefile
index bca0a2458..2733e0385 100644
--- a/2001/westley/Makefile
+++ b/2001/westley/Makefile
@@ -233,7 +233,7 @@ clean:
 
 clobber: clean
 	${RM} -f ${TARGET} ${ALT_TARGET}
-	${RM} -rf *.dSYM
+	${RM} -rf *.dSYM westley2*
 	@-if [ -e sandwich ]; then \
 	    ${RM} -f sandwich; \
 	    echo 'ate sandwich'; \
diff --git a/2004/jdalbec/Makefile b/2004/jdalbec/Makefile
index 7c509a8b8..e81fe5381 100644
--- a/2004/jdalbec/Makefile
+++ b/2004/jdalbec/Makefile
@@ -220,7 +220,7 @@ clean:
 clobber: clean
 	${RM} -f ${TARGET} ${ALT_TARGET}
 	${RM} -rf *.dSYM
-	${RM} -f ${PROG}2.c ${PROG}3.c
+	${RM} -f ${PROG}2.c ${PROG}3.c  ${PROG}2.alt.c ${PROG}3.alt.c
 	@-if [ -e sandwich ]; then \
 	    ${RM} -f sandwich; \
 	    echo 'ate sandwich'; \
diff --git a/2004/sds/Makefile b/2004/sds/Makefile
index 42d13786c..0bab7fbc7 100644
--- a/2004/sds/Makefile
+++ b/2004/sds/Makefile
@@ -203,7 +203,7 @@ clean:
 
 clobber: clean
 	${RM} -f ${TARGET} ${ALT_TARGET}
-	${RM} -rf *.dSYM
+	${RM} -rf *.dSYM encoder* message remarks.md sds2_msg.c sds_msg*
 	@-if [ -e sandwich ]; then \
 	    ${RM} -f sandwich; \
 	    echo 'ate sandwich'; \
diff --git a/2006/night/Makefile b/2006/night/Makefile
index 2692c4eb8..78bf66bc3 100644
--- a/2006/night/Makefile
+++ b/2006/night/Makefile
@@ -134,7 +134,6 @@ all: data ${TARGET}
 	sandwich supernova deep_magic magic charon pluto
 
 ${PROG}: ${PROG}.c
-	@echo "This next step may take some time to run:"
 	${CC} ${CFLAGS} $< -o $@ ${LDFLAGS}
 
 # alternative executable
@@ -143,7 +142,6 @@ alt: data ${ALT_TARGET}
 	@${TRUE}
 
 ${PROG}.alt: ${PROG}.alt.c
-	@echo "This next step may take some time to run:"
 	${CC} ${CFLAGS} $< -o $@ ${LDFLAGS}
 
 # data files
diff --git a/2006/sykes1/try.sh b/2006/sykes1/try.sh
index 8f05cd504..43ab02dff 100755
--- a/2006/sykes1/try.sh
+++ b/2006/sykes1/try.sh
@@ -25,7 +25,7 @@ try()
 
     read -r -n 1 -p "Press any key to see $SYKES1.c (space = next page, q = quit): "
     echo 1>&2
-    less -rEXF "$SYKES1.c"
+    less -rEXFK "$SYKES1.c"
     echo 1>&2
 
     read -r -n 1 -p "Press any key to run: diff -s $SYKES1.c $SYKES1.html: "
@@ -35,17 +35,17 @@ try()
 
     read -r -n 1 -p "Press any key to run: ./$SYKES1 (space = next page, q = quit): "
     echo 1>&2
-    ./"$SYKES1" | less -rEXF
+    ./"$SYKES1" | less -rEXFK
     echo 1>&2
 
     read -r -n 1 -p "Press any key to run: ./$SYKES1 5 (space = next page, q = quit): "
     echo 1>&2
-    ./"$SYKES1" 5 | less -rEXF
+    ./"$SYKES1" 5 | less -rEXFK
     echo 1>&2
 
     read -r -n 1 -p "Press any key to run: ./$SYKES1 -1 (space = next page, q = quit): "
     echo 1>&2
-    ./"$SYKES1" -1 | less -rEXF
+    ./"$SYKES1" -1 | less -rEXFK
     echo 1>&2
     echo "What happened and why did it happen?" 1>&2
     echo 1>&2
@@ -72,5 +72,5 @@ echo 1>&2
 
 read -r -n 1 -p "Press any key to run: diff sykes1.out sykes1.alt.out (space = next page, q = quit): "
 echo 1>&2
-diff sykes1.out sykes1.alt.out | less -rEXF
+diff sykes1.out sykes1.alt.out | less -rEXFK
 rm -f sykes1.out sykes1.alt.out