diff --git a/cdscript.sh b/cdscript.sh
index 10bd5b9..93b9861 100644
--- a/cdscript.sh
+++ b/cdscript.sh
@@ -11,13 +11,13 @@
 #    dependencies are:    imagemagick, bash, awk    
 
 # TODO:
-# - !!! Add support for back insert !!! 
-# - Remove bugs
-# - Add more paper types
-# - Make DPI a command line option
-# - Add different folding points for inserts
-# - Clean up code and add more comments
-# - Improve input and output further
+# - !!! Add support for back insert !!!            
+# - Remove bugs                                    
+# - Add more paper types                           DONE
+# - Make DPI a command line option                 DONE
+# - Add different folding points for inserts       
+# - Clean up code and add more comments            
+# - Improve input and output further               DONE
 
 
 # usage message
@@ -28,22 +28,28 @@ USAGE="Usage: $0 -p <paper> -c <cover> -b <back> [-i <back_image>] [-m <border>]
 HELP="Script to create printable CD jewel case inserts
 
 Usage:
-  $0 -p <paper> -c <cover> -b <back> [-i <back_image>] [-m <border>] -o <output>
+  $0 -p <paper> -c <cover> -b <back> [-i <back_image>] [-m <border>] [-d  DPI] -o <output>
 
 Required options:
-  -p  Paper format            a4 | letter
+  -p  Paper format            a4 | letter | legal
   -c  Album cover path        Path to cover image 
   -b  Back type               no | image
   -o  Output file             Path to save the resulting insert (NO PNG)
 
+
 Optional options:
   -i  Back image path         Required if back type is 'image'
   -m  Border width (px)       Adds a border around the cover/back
+  -d  DPI                     Desired DPI of the output
 
 DO NOT USE PNG FOR OUTPUT
 "
 
 
+# default DPI
+DPI="300"
+
+
 # error function
 error() {
     echo -e "Error: $1" >&2
@@ -68,8 +74,16 @@ check_output_file() {
 }
 
 
+# number check
+check_dpi() {
+    if ! [[ "$var" =~ ^[1-9][0-9]*$ ]]; then
+        error "DPI is not a valid number"
+    fi
+}
+
+
 # getops argument handling
-while getopts "hp:c:b:i:m:o:" o; do
+while getopts "hp:c:b:i:m:o:d:" o; do
     case "${o}" in
         h)
             echo -e "$HELP"
@@ -107,6 +121,11 @@ while getopts "hp:c:b:i:m:o:" o; do
             check_output_file "$OPTARG"
             OUTPUT="$OPTARG"
         ;;
+
+        d)
+            check_dpi "$OPTARG"
+            DPI="$OPTARG"
+        ;;
         *)
             echo -e "$USAGE"
             exit 1
@@ -127,10 +146,6 @@ done
 CONVERT() { awk -v mm="$1" -v dpi="$2" 'BEGIN{printf("%d", mm/25.4*dpi + 0.5)}'; }
 
 
-# DPI of paper
-DPI="300"
-
-
 # cover art size (mm)
 CO_MM="120"
 CO_PX="$(CONVERT "$CO_MM" "$DPI")"
@@ -143,10 +158,14 @@ A4MM_H="297"
 LTMM_W="216"
 LTMM_H="279"
 
+LGMM_W="216"
+LGMM_H="279"
+
 
 # same values in pixels
 A4PX="$(CONVERT "$A4MM_W" "$DPI")x$(CONVERT "$A4MM_H" "$DPI")"
 LTPX="$(CONVERT "$LTMM_W" "$DPI")x$(CONVERT "$LTMM_H" "$DPI")"
+LGPX="$(CONVERT "$LGMM_W" "$DPI")x$(CONVERT "$LGMM_H" "$DPI")"
 
 
 # assign to the 'size' variable the right value
@@ -154,9 +173,8 @@ if [ "$PAPER" = "a4" ]; then
     SIZE=$A4PX
 elif [ "$PAPER" = "letter" ]; then  
     SIZE=$LTPX
-else 
-    echo "what the fuck did you do"
-    exit
+elif [ "$PAPER" = "legal" ]; then  
+    SIZE=$LGPX
 fi
 
 
@@ -168,16 +186,57 @@ magick -colorspace sRGB -type TrueColor -depth 8 -size $SIZE canvas:white "$OUTP
 if [ "$BORDER" = "TRUE" ]; then
 INSET=$((BORDER_WIDTH / 2))
 magick ""$OUTPUT"" \( -size $((CO_PX + 2 * BORDER_WIDTH))x$((CO_PX * 2 + 2 * BORDER_WIDTH)) xc:none -colorspace sRGB -type TrueColor -depth 8 -fill none -stroke black -strokewidth $BORDER_WIDTH -draw "rectangle $INSET,$INSET $((CO_PX + BORDER_WIDTH - 1)),$((CO_PX * 2 + BORDER_WIDTH - 1))" \) -gravity center -composite ""$OUTPUT""
+
 fi
 
 
-# add the cover art set to the right size, rotated left by 90d and shifted up by (cover art size) / 2
-magick -colorspace sRGB -type TrueColor -depth 8 "$OUTPUT" \( "$COVER" -resize ${CO_PX}x${CO_PX} -rotate 270 \) -gravity center -geometry +0-$((CO_PX/2)) -composite "$OUTPUT" > /dev/null
+# adds the cover
+magick \
+ -colorspace sRGB\
+ -type TrueColor \
+ -depth 8 \
+ "$OUTPUT" \
+ \( "$COVER" \
+  -resize ${CO_PX}x${CO_PX} \
+  -rotate 270 \) \
+ -gravity center \
+ -geometry +0-$((CO_PX/2)) \
+ -composite \
+ "$OUTPUT" \
+> /dev/null
 
 
-# adds back
-if [ "$BACKTYPE" = "image" ]; then
-magick -colorspace sRGB -type TrueColor -depth 8 "$OUTPUT" \( "$BACKIMG" -resize ${CO_PX}x${CO_PX} -rotate 270 \) -gravity center -geometry +0+$((CO_PX/2)) -composite "$OUTPUT" > /dev/null
-else
-magick -colorspace sRGB -type TrueColor -depth 8 "$OUTPUT" \( -size ${CO_PX}x${CO_PX} xc:'#FFFFFF' \) -gravity center -geometry +0+$((CO_PX/2)) -composite "$OUTPUT" > /dev/null
+# adds back 
+if [ "$BACKTYPE" = "image" ]; then # if the back is an image 
+
+# adds image
+magick \
+ -colorspace sRGB \
+ -type TrueColor \
+ -depth 8 \
+ "$OUTPUT" \
+ \( "$BACKIMG" \ 
+  -resize ${CO_PX}x${CO_PX} \ 
+  -rotate 270 \) \
+ -gravity center \
+ -geometry +0+$((CO_PX/2)) \
+ -composite \
+ "$OUTPUT" \
+> /dev/null
+
+else  # if the back is not an image
+
+# adds white square
+magick \
+ -colorspace sRGB \
+ -type TrueColor \
+ -depth 8 \
+ "$OUTPUT" \
+ \( -size ${CO_PX}x${CO_PX} \
+  xc:'#FFFFFF' \) \
+ -gravity center \
+ -geometry +0+$((CO_PX/2)) \
+ -composite "$OUTPUT"\
+> /dev/null
+
 fi
\ No newline at end of file