diff --git a/index.php b/index.php
index bfd5c91..0933d6f 100644
--- a/index.php
+++ b/index.php
@@ -112,7 +112,7 @@
 
 	<script>
 	error_alert_projectid = "<?php echo $localeYaml['error_alert_projectid'][$loc]?>";
-        error_alert_realname = "<?php echo $localeYaml['error_alert_realname'][$loc]?>";
+	error_alert_realname = "<?php echo $localeYaml['error_alert_realname'][$loc]?>";
 	error_alert_email = "<?php echo $localeYaml['error_alert_email'][$loc]?>";
 	error_alert_iban = "<?php echo $localeYaml['error_alert_iban'][$loc]?>";
 	error_alert_bic = "<?php echo $localeYaml['error_alert_bic'][$loc]?>";
diff --git a/submit.php b/submit.php
index 4061e48..73e2dd2 100644
--- a/submit.php
+++ b/submit.php
@@ -2,45 +2,40 @@
 ob_start();
 session_start();
 
-if ($_GET['lst']=='1'){
+$get = var_export( $_GET, true);
+$request = var_export( $_REQUEST, true);
+$session_keys = var_export( array_keys( $_SESSION ), true);
+$session = var_export( $_SESSION, true);
+
+$my_log = fopen( "/tmp/my.log", "w" );
+#fwrite( $my_log, $get."\n" );
+fwrite( $my_log, $request."\n" );
+#fwrite( $my_log, $session_keys."\n" );
+#fwrite( $my_log, gettype($_SESSION['lst'])."\n" );
+#fwrite( $my_log, var_export($_SESSION['lst'], true)."\n" );
+
+#fwrite( $my_log, $session );
+fclose( $my_log );
+
+# Query parameter 'lst' is set in download URL after submitting form for
+# mailing
+if (isset($_GET['lst']) && $_GET['lst']=='1'){
+	error_log("DOWNLOAD previously generated PDF\n");
 	$file = "Antrag.pdf";
 	header('Content-Disposition: attachment; filename="'. $file . '"');
 	header('Content-Length: ' . strlen($_SESSION['lst']));
-	
 	echo $_SESSION['lst'];
-
 	die;
 }
-?>
-
-<html>
-<head>
-	<title>Kostenerstattungsforumlar</title>
-	<meta charset="utf-8">
-	
-	<meta name="viewport" content="width=device-width, initial-scale=1">
-
-	<!-- Kube CSS -->
-	<link rel="stylesheet" href="css/kube.min.css">
-	<link rel="stylesheet" href="addons/kube-addons.min.css" />
-
-	<link rel="stylesheet" href="master.css" />
-
-</head>
-<body>
-<?php
 
+# starting new form submission
 error_log("SUBMIT\n");
 
-require "config.php";
+require_once "config.php";
 require "PHPMailer/PHPMailer.php";
 require "PHPMailer/SMTP.php";
 require "PHPMailer/Exception.php";
 
-
-
-#$CONVERT_CMD = "/usr/bin/pdftk";
-
 require_once('TCPDF/tcpdf.php');
 
 class kaformPDF extends TCPDF {
@@ -128,13 +123,12 @@ function mkFrontPDF(){
 
 	}
 
-
 	$thtml = mkTable();
 
-	
 	// create new PDF document
 	$pdf = new kaformPDF(
-		PDF_PAGE_ORIENTATION, PDF_UNIT, $pageLayout /*PDF_PAGE_FORMAT*/, 
+		PDF_PAGE_ORIENTATION, PDF_UNIT, PDF_PAGE_FORMAT, 
+#		PDF_PAGE_ORIENTATION, PDF_UNIT, $pageLayout /*PDF_PAGE_FORMAT*/, 
 		true, 'UTF-8', false);
 
 	// set document information
@@ -222,8 +216,8 @@ function mkFrontPDF(){
 	</p>
 	<hr>
 	$thtml
-	
-	
+
+
 
 EOD;
 
@@ -423,11 +417,13 @@ $resultnam = tempnam("/tmp","karesult");
 
 
 
-$cmd = "$PDFTK_CMD";
-foreach ($pdfs as $filename){
-	$cmd .= " $filename";
-}
-$cmd .= " cat output $resultnam.pdf";
+#$cmd = "$PDFTK_CMD";
+#foreach ($pdfs as $filename){
+#	$cmd .= " $filename";
+#}
+#$cmd .= " cat output $resultnam.pdf";
+
+$cmd = sprintf("$GS_CMD", $resultnam) . " " . join( " ", $pdfs);
 
 error_log("EXEC CMD $cmd");
 exec ($cmd);
@@ -435,19 +431,21 @@ exec ($cmd);
 $file = "$resultnam.pdf";
 
 if ($_POST['sendmail']=='yes'){
-	$subj = "Kostenerstattungsantrag ueber".calcSum()." ".$_POST['currency'];	
+	error_log( "SENDMAIL has been requested");
+
+	$subj = sprintf("Kostenerstattungsantrag ueber %s %s", calcSum(), $_POST['currency']);	
 
 
 	$mail = new PHPMailer\PHPMailer\PHPMailer();
 	$mail->SMTPOptions = array(
-	        'ssl' => array(
-		        'verify_peer' => false,
-	       		'verify_peer_name' => false,
-		        'allow_self_signed' => true
-   		 )
+		'ssl' => array(
+			'verify_peer' => false,
+			'verify_peer_name' => false,
+			'allow_self_signed' => true
+		)
 	);
 
-	$mail->IsSMTP();	
+	$mail->IsSMTP();
 	$mail->setFrom($mailFrom);
 	$mail->Subject = $subj;
 	$mail->Body = "Kostenerstattungsantrag ...";
@@ -469,34 +467,45 @@ if ($_POST['sendmail']=='yes'){
 		die;
 	}
 
-
-	echo "Dein Antrag wurde versendet.<BR>";
-?>
-
-<!--	<div class="is-col">
-		<button type="button" onclick="downloadDocument(false);"
-		class="button is-orange"><?=_("Kopie des Antrags herunterladen")?></button>
-	</div> -->
-<?php
-	echo '<a href="./submit.php?lst=1" target="_blank">Kopie des Antrags herunterladen</a>';
-	echo "<br>";
-	echo '<a href="./">
-	Weiteren Antrag auf Kostenerstattung stellen</a><BR>';
-
+// Store resulting PDF in session store for later retrieval
 	$_SESSION['lst']=file_get_contents("$resultnam.pdf");
 	session_write_close();
+	$message = <<<EOS
+	<p>Dein Antrag wurde versendet.</p>
+	<p><a href="./submit.php?lst=1" target="_blank">Kopie des Antrags herunterladen</a></p>
+	<p><a href="./">Weiteren Antrag auf Kostenerstattung stellen</a></p>
+EOS;
 
-	die;
-
-
+//	die; // Form has been sent, HTML output has been generated
+} else {
+	error_log( "DOWNLOAD has been requested");
+	$dl_filename = sprintf( "%s_%s.pdf", "Antrag", (new DateTime())->format('Y-m-d_G-i-s') );
+	header('Content-Disposition: attachment; filename="'. basename($dl_filename) . '"');
+	header('Content-Length: ' . filesize($file));
+	readfile($file);
+	$message = <<<EOS
+	<p>Dein Antrag wurde erstellt, du musst ihn nur noch speichern.</p>
+	<p><a href="./">Weiteren Antrag auf Kostenerstattung stellen</a></p>
+EOS;
 }
-
-$file = "$resultnam.pdf";
-header('Content-Disposition: attachment; filename="'. basename($file) . '"');
-header('Content-Length: ' . filesize($file));
-readfile($file);
-
 ?>
+
+<html>
+<head>
+	<title>Kostenerstattungsforumlar</title>
+	<meta charset="utf-8">
+
+	<meta name="viewport" content="width=device-width, initial-scale=1">
+
+	<!-- Kube CSS -->
+	<link rel="stylesheet" href="css/kube.min.css">
+	<link rel="stylesheet" href="addons/kube-addons.min.css" />
+
+	<link rel="stylesheet" href="master.css" />
+
+</head>
+<body>
+<?php echo $message; ?>
 	<script src="js/kube.min.js"></script>
 	<script src="kaform.js"></script>
 	<script src="addons/upload/kube.upload.min.js"></script>
@@ -506,4 +515,10 @@ readfile($file);
 
 </body>
 </html>
+<?php
+error_log( "flush OUTPUT_BUFFER and end buffering" );
+ob_end_flush();
+die();
+?>
+
 
