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diff --git a/report/prune_results/compare.1stpass.tune.pdf b/report/prune_results/compare.1stpass.tune.pdf
index 28663f76..c6d9de34 100644
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diff --git a/report/prune_results/compare.1stpass.tune.png b/report/prune_results/compare.1stpass.tune.png
index cafaf58b..5a251b7c 100644
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diff --git a/report/prune_results/compare.1stpass.tune.ps b/report/prune_results/compare.1stpass.tune.ps
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diff --git a/report/prune_results/do.sh b/report/prune_results/do.sh
index d541ee93..afd85c57 100755
--- a/report/prune_results/do.sh
+++ b/report/prune_results/do.sh
@@ -1,7 +1,8 @@
 title="In multipass (TM -> TM+3gram), tuning for 1st pass -> BLEU (y) lost to pruning (x)." \
     n4="tuned_unigram" \
-    n3="tuned_without_lm" \
     n2="2ndpass_weights_without_lm" \
+    n3="tuned_without_lm" \
     xlbl="post-pruning fraction of edges kept" \
     obase=compare.1stpass.tune \
+    ymin=0 ymax=21 \
     ./graph.sh space.2pass- hdt hdt0 hdt1
diff --git a/report/prune_results/graph.sh b/report/prune_results/graph.sh
index ffd1dec8..8aa6e228 100755
--- a/report/prune_results/graph.sh
+++ b/report/prune_results/graph.sh
@@ -1,12 +1,15 @@
 # see do.sh for usage
 d=$(dirname `readlink -f $0`)
+. $d/lib.sh
 
 plboth() {
     local o=$1
     local oarg="-landscape"
     [ "$portrait" ] && oarg=
     shift
+    set -x
     pl -png -o $o.png "$@"
+set +x
     pl -ps -o $o.ps $oarg "$@"
     ps2pdf $o.ps $o.pdf
 }
@@ -24,12 +27,15 @@ graph3() {
     local of=$obase.png
     local ops=$obase.ps
         #yrange=0
+    local yrange_arg
+    [ "$ymin" ] && yrange_arg="yrange=$ymin $ymax"
     #pointsym=none pointsym2=none
     title=${title:-$ylbl $ylbl2 $ylbl3 vs. $xlbl}
     xlbl=${xlbl:=x}
     showvars_required obase xlbl ylbl ylbl2 ylbl3
+    showvars_optional yrange yrange_arg
     require_files $data
-    plboth $obase -prefab lines data=$data x=1  y=$y name="$ylbl" y2=$y2 name2="$ylbl2" y3=$y3 name3="$ylbl3" ylbldistance=$ylbldistance xlbl="$xlbl" title="$title" ystubfmt '%4g' ystubdet="size=6" linedet2="style=1" linedet3="style=3" -scale ${scale:-1.4}
+    plboth $obase -prefab lines data=$data x=1  "$yrange_arg" y=$y name="$ylbl" y2=$y2 name2="$ylbl2" y3=$y3 name3="$ylbl3" ylbldistance=$ylbldistance xlbl="$xlbl" title="$title" ystubfmt '%4g' ystubdet="size=6" linedet2="style=1" linedet3="style=3" -scale ${scale:-1.4}
     echo $of
 }
 
@@ -54,48 +60,6 @@ main() {
     exit
 }
 
-echo2() {
- echo "$@" 1>&2
-}
-
-errorq() {
- echo2 ERROR: "$@"
-}
-
-error() {
- errorq "$@"
- return 2
-}
-
-showvars_required() {
- echo2 $0 RUNNING WITH REQUIRED VARIABLES:
-    local k
- for k in "$@"; do
-  eval local v=\$$k
-  echo2 $k=$v
-  if [ -z "$v" ] ; then
-    errorq "required (environment or shell) variable $k not defined!"
-    return 1
-  fi
- done
- echo2
-}
-
-require_files() {
- local f
- [ "$*" ] || error "require_files called with empty args list"
- for f in "$@"; do
-    if ! have_file "$f" ; then
-        error "missing required file: $f"
-        return 1
-    fi
- done
- return 0
-}
-
-have_file() {
-    [ "$1" -a -f "$1" -a \( -z "$2" -o "$1" -nt "$2" \)  -a \( -z "$require_nonempty" -o -s "$1" \) ]
-}
 
 if ! [ "$nomain" ] ; then
     main "$@";exit
diff --git a/report/prune_results/lib.sh b/report/prune_results/lib.sh
new file mode 100755
index 00000000..ff951c64
--- /dev/null
+++ b/report/prune_results/lib.sh
@@ -0,0 +1,89 @@
+echo2() {
+ echo "$@" 1>&2
+}
+
+errorq() {
+ echo2 ERROR: "$@"
+}
+
+error() {
+ errorq "$@"
+ return 2
+}
+
+showvars_required() {
+ echo2 $0 RUNNING WITH REQUIRED VARIABLES:
+    local k
+ for k in "$@"; do
+  eval local v=\$$k
+  echo2 $k=$v
+  if [ -z "$v" ] ; then
+    errorq "required (environment or shell) variable $k not defined!"
+    return 1
+  fi
+ done
+ echo2
+}
+
+showvars_optional() {
+ echo2 RUNNING WITH OPTIONAL VARIABLES:
+    local k
+ for k in "$@"; do
+  if isset $k ; then
+   eval local v=\$$k
+   echo2 $k=$v
+  else
+   echo2 UNSET: $k
+   fi
+ done
+ echo2
+}
+
+require_files() {
+ local f
+ [ "$*" ] || error "require_files called with empty args list"
+ for f in "$@"; do
+    if ! have_file "$f" ; then
+        error "missing required file: $f"
+        return 1
+    fi
+ done
+ return 0
+}
+
+have_file() {
+    [ "$1" -a -f "$1" -a \( -z "$2" -o "$1" -nt "$2" \)  -a \( -z "$require_nonempty" -o -s "$1" \) ]
+}
+
+filename_from() {
+  perl -e '
+sub superchomp {
+    my ($ref)=@_;
+    if ($$ref) {
+        $$ref =~ s|^\s+||;
+        $$ref =~ s|\s+$||;
+        $$ref =~ s|\s+| |g;
+    }
+}
+
+sub filename_from {
+    my ($fname)=@_;
+   &superchomp(\$fname);
+   $fname =~ s|[^a-zA-Z0-9_-]+|.|g;
+   $fname =~ s|^\.|_|;
+    return $fname;
+}
+
+$"=" ";print filename_from("@ARGV"),"\n"
+' -- "$@"
+}
+
+preview() {
+ tailn=${tailn:-20}
+ head -v -n $tailn "$@"
+}
+
+isset() {
+  eval local v=\${$1+set}
+  [ "$v" = set ]
+}