diff --git a/docs/lto-barcode/code39.js b/docs/lto-barcode/code39.js
index d17c2ece..5c715cd7 100644
--- a/docs/lto-barcode/code39.js
+++ b/docs/lto-barcode/code39.js
@@ -53,7 +53,7 @@ let code39_codes = {
     "0": ['b', 's', 'b', 'S', 'B', 's', 'B', 's', 'b'],
     "J": ['b', 's', 'b', 's', 'B', 'S', 'B', 's', 'b'],
     "T": ['b', 's', 'b', 's', 'B', 's', 'B', 'S', 'b'],
-    "*": ['b', 'S', 'b', 's', 'B', 's', 'B', 's', 'b']
+    "*": ['b', 'S', 'b', 's', 'B', 's', 'B', 's', 'b'],
 };
 
 let colors = [
@@ -66,25 +66,22 @@ let colors = [
     '#E27B99',
     '#67A945',
     '#F6B855',
-    '#705A81'
+    '#705A81',
 ];
 
 let lto_label_width = 70;
 let lto_label_height = 17;
 
 function foreach_label(page_layout, callback) {
-
     let count = 0;
     let row = 0;
     let height = page_layout.margin_top;
 
     while ((height + page_layout.label_height) <= page_layout.page_height) {
-
 	let column = 0;
 	let width = page_layout.margin_left;
 
 	while ((width + page_layout.label_width) <= page_layout.page_width) {
-
 	    callback(column, row, count, width, height);
 	    count += 1;
 
@@ -97,11 +94,9 @@ function foreach_label(page_layout, callback) {
 	height += page_layout.label_height;
 	height += page_layout.row_spacing;
     }
-
 }
 
 function compute_max_labels(page_layout) {
-
     let max_labels = 0;
     foreach_label(page_layout, function() { max_labels += 1; });
     return max_labels;
@@ -186,7 +181,6 @@ function svg_label(mode, label, label_type, pagex, pagey, label_borders) {
 	}
 
 	for (let c of code) {
-
 	    if (c === 's') {
 		xpos += small;
 		continue;
@@ -216,7 +210,7 @@ function html_page_header() {
     /* no page margins */
     html += "@page{margin-left: 0px;margin-right: 0px;margin-top: 0px;margin-bottom: 0px;}";
     /* to hide things on printed page */
-    html +=  "@media print { .unprintable { visibility: hidden;	} }";
+    html += "@media print { .unprintable { visibility: hidden;	} }";
 
     html += "</style>";
 
@@ -241,7 +235,6 @@ function printBarcodePage() {
 }
 
 function generate_barcode_page(target_id, page_layout, label_list, calibration) {
-
     let svg = svg_page_header(page_layout.page_width, page_layout.page_height);
 
     let c = calibration;
@@ -255,7 +248,6 @@ function generate_barcode_page(target_id, page_layout, label_list, calibration)
     svg += '>';
 
     foreach_label(page_layout, function(column, row, count, xpos, ypos) {
-
 	if (count >= label_list.length) { return; }
 
 	let item = label_list[count];
@@ -297,12 +289,11 @@ function setupPrintFrame(frame, page_width, page_height) {
 }
 
 function generate_calibration_page(target_id, page_layout, calibration) {
-
     let frame = document.getElementById(target_id);
 
     setupPrintFrame(frame, page_layout.page_width, page_layout.page_height);
 
-    let svg = svg_page_header( page_layout.page_width,  page_layout.page_height);
+    let svg = svg_page_header(page_layout.page_width, page_layout.page_height);
 
     svg += "<defs>";
     svg += "<marker id='endarrow' markerWidth='10' markerHeight='7' ";
diff --git a/docs/lto-barcode/label-list.js b/docs/lto-barcode/label-list.js
index 6cf8acfb..64e8c289 100644
--- a/docs/lto-barcode/label-list.js
+++ b/docs/lto-barcode/label-list.js
@@ -4,7 +4,7 @@ Ext.define('LabelList', {
 
     plugins: {
         ptype: 'cellediting',
-        clicksToEdit: 1
+        clicksToEdit: 1,
     },
 
     selModel: 'cellmodel',
@@ -44,7 +44,7 @@ Ext.define('LabelList', {
 		xtype: 'prefixfield',
 		allowBlank: false,
 	    },
-	    renderer: function (value, metaData, record) {
+	    renderer: function(value, metaData, record) {
 		console.log(record);
 		if (record.data.mode === 'placeholder') {
 		    return "-";
@@ -60,7 +60,7 @@ Ext.define('LabelList', {
 		xtype: 'ltoTapeType',
 		allowBlank: false,
 	    },
-	    renderer: function (value, metaData, record) {
+	    renderer: function(value, metaData, record) {
 		console.log(record);
 		if (record.data.mode === 'placeholder') {
 		    return "-";
@@ -133,7 +133,7 @@ Ext.define('LabelList', {
 		    handler: function(grid, rowIndex) {
 			grid.getStore().removeAt(rowIndex);
 		    },
-		}
+		},
 	    ],
 	},
     ],
diff --git a/docs/lto-barcode/lto-barcode.js b/docs/lto-barcode/lto-barcode.js
index cdaa2076..d6cb8506 100644
--- a/docs/lto-barcode/lto-barcode.js
+++ b/docs/lto-barcode/lto-barcode.js
@@ -4,7 +4,6 @@ if (Ext.isFirefox) {
 }
 
 function draw_labels(target_id, label_list, page_layout, calibration) {
-
     let max_labels = compute_max_labels(page_layout);
 
     let count_fixed = 0;
@@ -44,20 +43,16 @@ function draw_labels(target_id, label_list, page_layout, calibration) {
 		count = fill_size;
 	    }
 	    rest -= count;
+	} else if (item.end <= item.start) {
+	    count = 1;
 	} else {
-	    if (item.end <= item.start) {
-		count = 1;
-	    } else {
-		count = (item.end - item.start) + 1;
-	    }
+	    count = (item.end - item.start) + 1;
 	}
 
 	for (j = 0; j < count; j++) {
-
 	    let id = item.start + j;
 
 	    if (item.prefix.length == 6) {
-
 		list.push({
 		    label: item.prefix,
 		    tape_type: item.tape_type,
@@ -66,9 +61,7 @@ function draw_labels(target_id, label_list, page_layout, calibration) {
 		});
 		rest += count - j - 1;
 		break;
-
 	    } else {
-
 		let pad_len = 6-item.prefix.length;
 		let label = item.prefix + id.toString().padStart(pad_len, 0);
 
@@ -115,10 +108,10 @@ Ext.define('MainView', {
 		label_list.push(record.data);
 	    });
 
-	    let page_layout_view =  view.down("pageLayoutPanel");
+	    let page_layout_view = view.down("pageLayoutPanel");
 	    let page_layout = page_layout_view.getValues();
 
-	    let calibration_view =  view.down("pageCalibration");
+	    let calibration_view = view.down("pageCalibration");
 	    let page_calibration = calibration_view.getValues();
 
 	    draw_labels("print_frame", label_list, page_layout, page_calibration);
@@ -127,10 +120,10 @@ Ext.define('MainView', {
 	update_calibration_preview: function() {
 	    let me = this;
 	    let view = me.getView();
-	    let page_layout_view =  view.down("pageLayoutPanel");
+	    let page_layout_view = view.down("pageLayoutPanel");
 	    let page_layout = page_layout_view.getValues();
 
-	    let calibration_view =  view.down("pageCalibration");
+	    let calibration_view = view.down("pageCalibration");
 	    let page_calibration = calibration_view.getValues();
 	    console.log(page_calibration);
 	    generate_calibration_page('print_frame', page_layout, page_calibration);
@@ -195,19 +188,18 @@ Ext.define('MainView', {
 	    border: false,
 	    flex: 1,
 	    scrollable: true,
-	    tools:[{
+	    tools: [{
 		type: 'print',
 		tooltip: 'Open Print Dialog',
 		handler: function(event, toolEl, panelHeader) {
 		    printBarcodePage();
-		}
+		},
 	    }],
 	},
     ],
 });
 
 Ext.onReady(function() {
-
     Ext.create('MainView', {
 	renderTo: Ext.getBody(),
     });
diff --git a/docs/lto-barcode/page-calibration.js b/docs/lto-barcode/page-calibration.js
index f77425ad..3c7fed82 100644
--- a/docs/lto-barcode/page-calibration.js
+++ b/docs/lto-barcode/page-calibration.js
@@ -139,4 +139,4 @@ Ext.define('PageCalibration', {
 	    ],
 	},
     ],
-})
+});
diff --git a/docs/lto-barcode/paper-size.js b/docs/lto-barcode/paper-size.js
index b084062d..d2481f3c 100644
--- a/docs/lto-barcode/paper-size.js
+++ b/docs/lto-barcode/paper-size.js
@@ -21,7 +21,7 @@ let paper_sizes = {
 	column_spacing: 0,
 	row_spacing: 0,
     },
-}
+};
 
 function paper_size_combo_data() {
     let data = [];