diff --git a/leaf.php b/leaf.php
index d8c0ad8..f656ebf 100644
--- a/leaf.php
+++ b/leaf.php
@@ -1,7 +1,7 @@
 <?php
 
 // Leaf - Tools for Book Scans
-$version = "0.8.4";
+$version = "0.8.6";
 $debug = 1;
 $time_start = microtime(true);
 date_default_timezone_set("America/Los_Angeles");
@@ -23,13 +23,25 @@ function levels_ps_to_imgk($string) {
 	if (count($parts) != 3) {
 		msg("Invalid levels string",1);
 		} else {
-		$black = ($parts[0]/253)."%";
+		$black = (number_format(($parts[0]/253),5)*100)."%";
 		$white = (number_format(($parts[1]/255),5)*100)."%";
 		$gamma = $parts[2];
 		return $black.",".$white.",".$gamma;
 		}
 	}
 
+function unsharp_ps_to_imgk($string) {
+	$parts = explode(",", $string);
+	if (count($parts) != 3) {
+		msg("Invalid levels string",1);
+		} else {
+		$radius = "0x".($parts[1]+1);
+		$amount = $parts[0]/100;
+		$threshold = $parts[2]/255;
+		return $radius."+".$amount."+".$threshold;
+		}
+	}
+
 function multiexec($thread, $x, $null = true) {
 	global $debug;
 	$batch = array_chunk($thread,$x);
@@ -45,14 +57,15 @@ function multiexec($thread, $x, $null = true) {
 			} else {
 			$echo = implode("", $msg);
 			}
-		if ($null) {
-			$exec = implode(" > /dev/null & ",$cmd)." & wait";
+		if ($debug || !$null) {
+			$pipe = "";
 			} else {
-			$exec = implode(" & ",$cmd)." & wait";
+			$pipe = " 2>&1";
 			}
+		$exec = implode($pipe." & ",$cmd).$pipe." & wait";
 		echo $echo;
 		if ($debug) {
-			echo "\n\n".$exec."\n\n";
+			echo "\n".str_replace($pipe." & ", "\n\n", $exec)."\n";
 			}
 		@exec($exec);
 		}
@@ -118,6 +131,10 @@ function args($query) {
 		return chop($argv[count($argv)-1], "/")."/";
 		} elseif ($query == "levels" && isset($opt['levels'])) {
 		return levels_ps_to_imgk($opt['levels']);
+		} elseif ($query == "plevels" && isset($opt['plevels'])) {
+		return levels_ps_to_imgk($opt['plevels']);
+		} elseif ($query == "unsharp" && isset($opt['unsharp'])) {
+		return unsharp_ps_to_imgk($opt['unsharp']);
 		} elseif (isset($opt[$query])) {
 		return $opt[$query];
 		} else {
@@ -191,7 +208,8 @@ deskew                      detect rotation angles
 depaper						divide page with itself using mask (better despine)
     -mask=<file>            mask file for spine-left image
     -mpush=<levels>         levels for divide map (ex. \"0-253,0-255,0-2\")
-    -mix=<0-100>            percentage mix with original (90% = mostly og)
+    -mix=<0-100> (null)     percentage mix with original (90% = mostly og)
+    -skip=<label> (null)    skip files with this label
 despine                     remove shadow from spine
     -levels=<params>        levels for overlay (ex. \"0-253,0-255,0-2\")
     -width=<pixels> (300)   spine width in pixels
@@ -216,8 +234,13 @@ generate                    create final jpg images for pdf creation
     -levels=<params>        photoshop levels adjustment (ex. \"0-253,0-255,0-2\")
     -px=<num>               png size multiplier
     -plevels=<params>       png levels adjustment (otherwise calculated from adjust)
+    -pt=<0-255>             use threshold method with photoshop level value
+    -pc=<2,2!,3> (2)        colors for final png (2! = intermediary dithering)
+    -unsharp=<params>       photoshop unsharp parameters (ex. \"100,1,0\")
 match                       move files and set crop values to match source dir
     -source=<dir>           read FROM dir
+notes                       save leaf shell history to text file
+    -lines=<num> (100)      lines to read from bash_history
 profile                     apply xmp profile to images (requires exiv2 > 0.25)
     -file=<file>            xmp profile
 resort                      reorder image sequence by adding a new image
@@ -238,6 +261,34 @@ strip                       strip exif crop values from images with exiftool
 echo $help;
 fin();
 
+////////////////////////////////////////////////////////////////////////////////////////////////
+// Note: Notes
+//////////////////////
+} elseif (args("app") == "notes") {
+echo Welcome("Save shell commands to text file");
+/////////////////////////////////////////////////////////////////////////
+
+if (args("lines")) {
+	$lines = args("lines");
+	} else {
+	$lines = 100;
+	}
+
+$notes = shell_exec("tail -n ".$lines." /Users/peter/.bash_history");
+foreach (explode("\n", $notes) as $line) {
+	if (substr($line, 0, 4) == "leaf") {
+		$keep[] = $line;
+		}
+	}
+	
+if (!isset($keep[0])) {
+	msg("Error reading bash history",1);
+	} else {
+	file_put_contents("leaf_notes.txt", implode("\n", $keep));
+	}
+
+fin();
+
 ////////////////////////////////////////////////////////////////////////////////////////////////
 // Note: Brightness_table
 //////////////////////
@@ -265,6 +316,12 @@ if (!file_exists(args("mask"))) {
 	msg("Can't open mask",1);
 	}
 
+if (!args("mpush")) {
+	msg("Please specify divide levels with mpush",1);
+	} else {
+	$mpush = levels_ps_to_imgk(args("mpush"));
+	}
+
 if (count(glob($dest."/*.*"))) {
 	msg("Files already exist in ".$dest.". Move to trash?",2);
 	exec("/opt/local/bin/trash -a ".$dest);
@@ -273,17 +330,32 @@ if (count(glob($dest."/*.*"))) {
 	mkdir($dest);
 	}
 
+msg("Building threads...");
+
 $files = glob(args("dir")."*.*");
 foreach ($files as $file) {
 	$ext = pathinfo($file,PATHINFO_EXTENSION);
 	$result = $dest."/".basename($file);
 	list ($width, $height) = getimagesize($file);
+	$divided = "\( ".$file." \( ".$file." -colorspace gray -level ".$mpush." \) -compose Divide_Src -composite \)";
 	if (substr(basename($file), 0, 3) % 2 == 0) {
-		$cmd = "convert test.jpg \( ".$file." \( ".args("mask")."[".$width."x".$height."] -rotate 180 \) -alpha Off -compose CopyOpacity -composite \) -compose Over -composite ".$result;
+		$cmd = "convert ".$file." \( ".$divided." \( ".args("mask")."[".$width."x".$height."!] -flop \) -alpha Off -compose CopyOpacity -composite \) -compose Over -composite ".$result;
 		} else {
-		$cmd = "convert test.jpg \( ".$file." ".args("mask")."[".$width."x".$height."] -alpha Off -compose CopyOpacity -composite \) -compose Over -composite ".$result;
+		$cmd = "convert ".$file." \( ".$divided." ".args("mask")."[".$width."x".$height."!] -alpha Off -compose CopyOpacity -composite \) -compose Over -composite ".$result;
+		}
+	if (args("mix")) {
+		$pass1 = str_replace("convert", "convert \(", $cmd);
+		$pass2 = str_replace("-composite ".$result, "-composite \) ".$file." -auto-orient -compose dissolve -define compose:args=".args("mix")." -composite ".$result, $pass1);
+		$cmd = $pass2;
 		}
 	$msg = "Converting ".$file;	
+	if (args("skip")) {
+		$label = trim(shell_exec("exiftool -s -s -s -Label ".$file));
+		if ($label == args("skip")) {
+			$msg .= " <Skipping label=".args("skip").">";
+			$cmd = "cp ".$file." ".$result;
+			}
+		}
 	$thread[] = array($msg, $cmd);
 	}
 
@@ -347,7 +419,6 @@ foreach ($files as $file) {
 		} else {
 		$quality = $default_quality;
 		}
-	
 
 	$msg = $file." matched, despining...";
 	$cmd = "convert ".$file." \( ".$file." -auto-orient -crop ".$crop." -colorspace gray -level ".$adjust." \) -auto-orient -geometry ".$geo." -compose Divide_Src -composite -quality ".$quality." ".$dest."/".basename($file);
@@ -429,7 +500,7 @@ fin();
 // Note: Generate
 //////////////////////
 } elseif (args("app") == "generate") {
-echo Welcome("Generate final jpg images");
+echo Welcome("Generate final images");
 /////////////////////////////////////////////////////////////////////////
 
 $dest = rtrim(args("dir"), '/')."_generated";
@@ -484,7 +555,7 @@ foreach ($files as $file) {
 		}
 	if ($parts[0] == "bitmap") {
 		$bitmap[] = array($file,$width,$height);
-		} elseif ($parts[1] == "True") {
+		} elseif ($parts[1] == "True" || $parts[0] == "grayscale") {
 		$grey[] = array($file,$width,$height);
 		} elseif ($ratio < 3) {
 		$color[] = array($file,$width,$height);
@@ -559,13 +630,15 @@ if (isset($spine)) {
 
 foreach ($jpg as $parts) {
 
+	continue;
+
 	$file = $parts[0];
 	$output = $dest."/".basename($file);
 	
 	if (isset($parts[3]) && $parts[3] == 1) {
 		
 		$msg = "Processing greyscale page ".$file." @ ".$dims."!";
-		$cmd = "convert -resize ".$dims."\! -colorspace gray ";
+		$cmd = "convert -resize ".$dims."\! -colorspace gray -type TrueColor ";
 		
 		} elseif (isset($parts[3]) && $parts[3] == 2) {
 		
@@ -578,6 +651,11 @@ foreach ($jpg as $parts) {
 		$msg = "Processing color page ".$file." @ ".$dims."!";
 		$cmd = "convert -resize ".$dims."\! ";
 		
+		if (args("modulate")) {
+			$msg .= " (".args("modulate").")";
+			$cmd .= "-modulate ".args("modulate")." ";
+			}
+		
 		}		
 	
 	if (args("levels")) {
@@ -585,6 +663,11 @@ foreach ($jpg as $parts) {
 		$cmd .= "-level ".args("levels")." ";
 		}
 	
+	if (args("unsharp")) {
+		$msg .= " (".args("unsharp").")";
+		$cmd .= "-unsharp ".args("unsharp")." ";
+		}
+	
 	$msg .= " [Q=".$quality."]";
 	$cmd .= "-quality ".$quality." ".$file." ".$output;
 	
@@ -602,6 +685,43 @@ multiexec($thread_b,$xt);
 
 if (isset($bitmap)) {
 
+	if (!args("pt")) {
+
+		if (args("levels")) {
+			$adjust = args("levels");
+			} else {
+			$adjust = "0%,100%,1";
+			}
+
+		$parts = explode(",", $adjust);
+		$black = rtrim($parts[0],"%");
+		$white = rtrim($parts[1],"%");
+		$gamma = $parts[2];
+
+		if (args("plevels")) {
+			$radjust = args("plevels");
+			} else {
+			$radjust = ($black+60)."%".",".($white-15)."%".",".($gamma-.8);
+			}
+		
+		msg("Checking bitmap output for brightness...");
+		$testfile = $bitmap[0][0];
+		$level = chop(shell_exec("convert \( ".$testfile." -resize ".$pngdims."\! -level ".$radjust." -monochrome -colors 2 -depth 1 \) -colorspace Gray -format \"%[fx:quantumrange*image.mean]\" info:"));
+	
+		if ($level < 20000) {
+			msg("Image is dark, applying negate");
+			$negate = "-negate ";
+			} else {
+			msg("Image is bright, skipping negate");
+			$negate = "";
+			}
+	
+		} else {
+		
+		$threshold = (number_format((args("pt")/255),5)*100)."%";
+		
+		}
+
 	foreach ($bitmap as $parts) {
 		
 		$file = $parts[0];
@@ -609,30 +729,47 @@ if (isset($bitmap)) {
 		$output = $dest."/".basename($file,$ext)."png";
 		
 		$msg = "Processing bitmap page ".$file." @ ".$pngdims."!";
-		$cmd = "convert -resize ".$pngdims."\! ";
 		
-		if (args("levels")) {
-			$adjust = args("levels");
-			} else {
-			$adjust = "0%,100%,1";
-			}
+		if (args("pt")) {
 			
-		$parts = explode(",", $adjust);
-		$black = rtrim($parts[0],"%");
-		$white = rtrim($parts[1],"%");
-		$gamma = $parts[2];
-		
-		if (args("plevels")) {
-			$radjust = args("plevels");
-			} else {
-			$radjust = ($black+60)."%".",".($white-15)."%".",".($gamma-.7);
-			}
-		
-		$msg .= " (".$radjust.")";
-		$cmd .= "-level ".$radjust." ";
+			if (args("pc") == "2!") { // a b&w bitmap image with an intermediary antialiased step (darker text)
 			
-		$cmd .= "-monochrome -colors 2 -depth 1 -negate ".$file." ".$output;
-		
+				$msg .= " (".$threshold.", ".$pl.")";
+				$cmd = "convert \( \( \( ".$file." -threshold ".$threshold." \) -set colorspace sRGB -type truecolor \) -resize ".$pngdims."\! \) -threshold 95% ".$output;
+			
+				} elseif (args("pc") == "3") { // a b&w bitmap image with an additional color for antialiasing
+				
+				$msg .= " (".$threshold.", ".$pl.")";
+				$cmd = "convert \( \( \( ".$file." -threshold ".$threshold." \) -set colorspace sRGB -type truecolor \) -resize ".$pngdims."\! \) -set colorspace Grayscale -colors 4 -depth 2 ".$output;
+				
+				} else { // a b&w bitmap image
+				
+				$msg .= " (".$threshold.")";
+				$cmd = "convert -resize ".$pngdims."\! -threshold ".$threshold." ".$file." ".$output;
+				
+				}
+			
+			} else {
+			
+			if (args("pc") == "2!") { // a b&w bitmap image with an intermediary antialiased step (darker text)
+			
+				$msg .= " (".$radjust.", ".$pl.")";
+				$cmd = "convert \( \( \( ".$file." -level ".$radjust." -monochrome -colors 2 -depth 1 ".$negate."\) -set colorspace sRGB -type truecolor \) -resize ".$pngdims."\! \) -threshold 95% ".$output;
+			
+				} elseif (args("pc") == "3") { // a b&w bitmap image with an additional color for antialiasing
+				
+				$msg .= " (".$radjust.", ".$pl.")";
+				$cmd = "convert \( ".$file." -level ".$radjust." -resize ".$pngdims."\! \) -set colorspace Grayscale -colors 4 -depth 2 ".$output;
+				
+				} else { // a b&w bitmap image
+				
+				$msg .= " (".$radjust.")";
+				$cmd = "convert -resize ".$pngdims."\! -level ".$radjust." -monochrome -colors 2 -depth 1 ".$negate.$file." ".$output;
+				
+				}
+			
+			}
+
 		$thread_c[] = array($msg, $cmd);
 		$thread_d[] = array(".","exiftool -overwrite_original -PixelsPerUnitX=".$pngdpi." -PixelsPerUnitY=".$pngdpi." ".$output);
 		
@@ -1560,10 +1697,16 @@ if (!args("nomap")) {
 		
 			$size = $deskew_size."x".$deskew_size;
 			
-			if (substr(basename($file), 0, 3) % 2 == 0) {
-				$cmd = "convert ".$file." -auto-orient -crop ".$area_right." -level ".$deskew_contrast."%,".(100-$deskew_contrast)."% -colorspace Gray -resize ".$size." ".$dmfile;
+			if (strtolower($ext) == "dng") {
+				$adj = "0%,".(100-$deskew_contrast)."%";
 				} else {
-				$cmd = "convert ".$file." -auto-orient -crop ".$area_left." -level ".$deskew_contrast."%,".(100-$deskew_contrast)."% -colorspace Gray -resize ".$size." ".$dmfile;
+				$adj = $deskew_contrast."%,".(100-$deskew_contrast)."%";
+				}
+			
+			if (substr(basename($file), 0, 3) % 2 == 0) {
+				$cmd = "convert ".$file." -auto-orient -crop ".$area_right." -level ".$adj." -colorspace Gray -resize ".$size." ".$dmfile;
+				} else {
+				$cmd = "convert ".$file." -auto-orient -crop ".$area_left." -level ".$adj." -colorspace Gray -resize ".$size." ".$dmfile;
 				}
 			
 			$msg = "Creating dmap for ".$file;