diff --git a/cell.go b/cell.go
index e6755d6663..69f8697193 100644
--- a/cell.go
+++ b/cell.go
@@ -1,11 +1,13 @@
-// Package excelize providing a set of functions that allow you to write to
-// and read from XLSX files. Support reads and writes XLSX file generated by
-// Microsoft Excel™ 2007 and later. Support save file without losing original
-// charts of XLSX. This library needs Go version 1.8 or later.
-//
-// Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
-// this source code is governed by a BSD-style license that can be found in
-// the LICENSE file.
+/*
+Package excelize providing a set of functions that allow you to write to
+and read from XLSX files. Support reads and writes XLSX file generated by
+Microsoft Excel™ 2007 and later. Support save file without losing original
+charts of XLSX. This library needs Go version 1.8 or later.
+
+Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
+this source code is governed by a BSD-style license that can be found in
+the LICENSE file.
+*/
 package excelize
 
 import (
diff --git a/chart.go b/chart.go
index 204768497b..4b73c3b75c 100644
--- a/chart.go
+++ b/chart.go
@@ -1,11 +1,13 @@
-// Package excelize providing a set of functions that allow you to write to
-// and read from XLSX files. Support reads and writes XLSX file generated by
-// Microsoft Excel™ 2007 and later. Support save file without losing original
-// charts of XLSX. This library needs Go version 1.8 or later.
-//
-// Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
-// this source code is governed by a BSD-style license that can be found in
-// the LICENSE file.
+/*
+Package excelize providing a set of functions that allow you to write to
+and read from XLSX files. Support reads and writes XLSX file generated by
+Microsoft Excel™ 2007 and later. Support save file without losing original
+charts of XLSX. This library needs Go version 1.8 or later.
+
+Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
+this source code is governed by a BSD-style license that can be found in
+the LICENSE file.
+*/
 package excelize
 
 import (
diff --git a/col.go b/col.go
index cddb09f45a..a2d7e69889 100644
--- a/col.go
+++ b/col.go
@@ -1,11 +1,13 @@
-// Package excelize providing a set of functions that allow you to write to
-// and read from XLSX files. Support reads and writes XLSX file generated by
-// Microsoft Excel™ 2007 and later. Support save file without losing original
-// charts of XLSX. This library needs Go version 1.8 or later.
-//
-// Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
-// this source code is governed by a BSD-style license that can be found in
-// the LICENSE file.
+/*
+Package excelize providing a set of functions that allow you to write to
+and read from XLSX files. Support reads and writes XLSX file generated by
+Microsoft Excel™ 2007 and later. Support save file without losing original
+charts of XLSX. This library needs Go version 1.8 or later.
+
+Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
+this source code is governed by a BSD-style license that can be found in
+the LICENSE file.
+*/
 package excelize
 
 import (
diff --git a/comment.go b/comment.go
index 94aad6c198..241261cb41 100644
--- a/comment.go
+++ b/comment.go
@@ -1,11 +1,13 @@
-// Package excelize providing a set of functions that allow you to write to
-// and read from XLSX files. Support reads and writes XLSX file generated by
-// Microsoft Excel™ 2007 and later. Support save file without losing original
-// charts of XLSX. This library needs Go version 1.8 or later.
-//
-// Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
-// this source code is governed by a BSD-style license that can be found in
-// the LICENSE file.
+/*
+Package excelize providing a set of functions that allow you to write to
+and read from XLSX files. Support reads and writes XLSX file generated by
+Microsoft Excel™ 2007 and later. Support save file without losing original
+charts of XLSX. This library needs Go version 1.8 or later.
+
+Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
+this source code is governed by a BSD-style license that can be found in
+the LICENSE file.
+*/
 package excelize
 
 import (
diff --git a/datavalidation.go b/datavalidation.go
index c0f006f35f..66485569d9 100644
--- a/datavalidation.go
+++ b/datavalidation.go
@@ -1,11 +1,13 @@
-// Package excelize providing a set of functions that allow you to write to
-// and read from XLSX files. Support reads and writes XLSX file generated by
-// Microsoft Excel™ 2007 and later. Support save file without losing original
-// charts of XLSX. This library needs Go version 1.8 or later.
-//
-// Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
-// this source code is governed by a BSD-style license that can be found in
-// the LICENSE file.
+/*
+Package excelize providing a set of functions that allow you to write to
+and read from XLSX files. Support reads and writes XLSX file generated by
+Microsoft Excel™ 2007 and later. Support save file without losing original
+charts of XLSX. This library needs Go version 1.8 or later.
+
+Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
+this source code is governed by a BSD-style license that can be found in
+the LICENSE file.
+*/
 package excelize
 
 import (
diff --git a/datavalidation_test.go b/datavalidation_test.go
index 0f50f2906d..7d10024c1c 100644
--- a/datavalidation_test.go
+++ b/datavalidation_test.go
@@ -1,11 +1,13 @@
-// Package excelize providing a set of functions that allow you to write to
-// and read from XLSX files. Support reads and writes XLSX file generated by
-// Microsoft Excel™ 2007 and later. Support save file without losing original
-// charts of XLSX. This library needs Go version 1.8 or later.
-//
-// Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
-// this source code is governed by a BSD-style license that can be found in
-// the LICENSE file.
+/*
+Package excelize providing a set of functions that allow you to write to
+and read from XLSX files. Support reads and writes XLSX file generated by
+Microsoft Excel™ 2007 and later. Support save file without losing original
+charts of XLSX. This library needs Go version 1.8 or later.
+
+Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
+this source code is governed by a BSD-style license that can be found in
+the LICENSE file.
+*/
 package excelize
 
 import "testing"
diff --git a/date.go b/date.go
index 56d6ad7ae7..4ef055985b 100644
--- a/date.go
+++ b/date.go
@@ -1,11 +1,13 @@
-// Package excelize providing a set of functions that allow you to write to
-// and read from XLSX files. Support reads and writes XLSX file generated by
-// Microsoft Excel™ 2007 and later. Support save file without losing original
-// charts of XLSX. This library needs Go version 1.8 or later.
-//
-// Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
-// this source code is governed by a BSD-style license that can be found in
-// the LICENSE file.
+/*
+Package excelize providing a set of functions that allow you to write to
+and read from XLSX files. Support reads and writes XLSX file generated by
+Microsoft Excel™ 2007 and later. Support save file without losing original
+charts of XLSX. This library needs Go version 1.8 or later.
+
+Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
+this source code is governed by a BSD-style license that can be found in
+the LICENSE file.
+*/
 package excelize
 
 import (
diff --git a/excelize.go b/excelize.go
index 915955c8fb..4f45784592 100644
--- a/excelize.go
+++ b/excelize.go
@@ -1,11 +1,13 @@
-// Package excelize providing a set of functions that allow you to write to
-// and read from XLSX files. Support reads and writes XLSX file generated by
-// Microsoft Excel™ 2007 and later. Support save file without losing original
-// charts of XLSX. This library needs Go version 1.8 or later.
-//
-// Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
-// this source code is governed by a BSD-style license that can be found in
-// the LICENSE file.
+/*
+Package excelize providing a set of functions that allow you to write to
+and read from XLSX files. Support reads and writes XLSX file generated by
+Microsoft Excel™ 2007 and later. Support save file without losing original
+charts of XLSX. This library needs Go version 1.8 or later.
+
+Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
+this source code is governed by a BSD-style license that can be found in
+the LICENSE file.
+*/
 package excelize
 
 import (
diff --git a/file.go b/file.go
index 76ef98687a..350f753949 100644
--- a/file.go
+++ b/file.go
@@ -1,11 +1,13 @@
-// Package excelize providing a set of functions that allow you to write to
-// and read from XLSX files. Support reads and writes XLSX file generated by
-// Microsoft Excel™ 2007 and later. Support save file without losing original
-// charts of XLSX. This library needs Go version 1.8 or later.
-//
-// Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
-// this source code is governed by a BSD-style license that can be found in
-// the LICENSE file.
+/*
+Package excelize providing a set of functions that allow you to write to
+and read from XLSX files. Support reads and writes XLSX file generated by
+Microsoft Excel™ 2007 and later. Support save file without losing original
+charts of XLSX. This library needs Go version 1.8 or later.
+
+Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
+this source code is governed by a BSD-style license that can be found in
+the LICENSE file.
+*/
 package excelize
 
 import (
diff --git a/hsl.go b/hsl.go
index fd10b5dae8..d8fc87dec8 100644
--- a/hsl.go
+++ b/hsl.go
@@ -1,35 +1,37 @@
-// Package excelize providing a set of functions that allow you to write to
-// and read from XLSX files. Support reads and writes XLSX file generated by
-// Microsoft Excel™ 2007 and later. Support save file without losing original
-// charts of XLSX. This library needs Go version 1.8 or later.
-//
-// Copyright (c) 2012 Rodrigo Moraes. All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-// 	 * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-// 	 * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-// 	 * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+/*
+Package excelize providing a set of functions that allow you to write to
+and read from XLSX files. Support reads and writes XLSX file generated by
+Microsoft Excel™ 2007 and later. Support save file without losing original
+charts of XLSX. This library needs Go version 1.8 or later.
+
+Copyright (c) 2012 Rodrigo Moraes. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+	 * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+	 * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+	 * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
 package excelize
 
 import (
diff --git a/lib.go b/lib.go
index 5be9b16213..c4cd95b740 100644
--- a/lib.go
+++ b/lib.go
@@ -1,11 +1,13 @@
-// Package excelize providing a set of functions that allow you to write to
-// and read from XLSX files. Support reads and writes XLSX file generated by
-// Microsoft Excel™ 2007 and later. Support save file without losing original
-// charts of XLSX. This library needs Go version 1.8 or later.
-//
-// Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
-// this source code is governed by a BSD-style license that can be found in
-// the LICENSE file.
+/*
+Package excelize providing a set of functions that allow you to write to
+and read from XLSX files. Support reads and writes XLSX file generated by
+Microsoft Excel™ 2007 and later. Support save file without losing original
+charts of XLSX. This library needs Go version 1.8 or later.
+
+Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
+this source code is governed by a BSD-style license that can be found in
+the LICENSE file.
+*/
 package excelize
 
 import (
diff --git a/rows.go b/rows.go
index 8e1e0c3bb3..aa8b2a666d 100644
--- a/rows.go
+++ b/rows.go
@@ -1,11 +1,13 @@
-// Package excelize providing a set of functions that allow you to write to
-// and read from XLSX files. Support reads and writes XLSX file generated by
-// Microsoft Excel™ 2007 and later. Support save file without losing original
-// charts of XLSX. This library needs Go version 1.8 or later.
-//
-// Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
-// this source code is governed by a BSD-style license that can be found in
-// the LICENSE file.
+/*
+Package excelize providing a set of functions that allow you to write to
+and read from XLSX files. Support reads and writes XLSX file generated by
+Microsoft Excel™ 2007 and later. Support save file without losing original
+charts of XLSX. This library needs Go version 1.8 or later.
+
+Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
+this source code is governed by a BSD-style license that can be found in
+the LICENSE file.
+*/
 package excelize
 
 import (
diff --git a/shape.go b/shape.go
index 42aefcf99c..12cb725086 100644
--- a/shape.go
+++ b/shape.go
@@ -1,11 +1,13 @@
-// Package excelize providing a set of functions that allow you to write to
-// and read from XLSX files. Support reads and writes XLSX file generated by
-// Microsoft Excel™ 2007 and later. Support save file without losing original
-// charts of XLSX. This library needs Go version 1.8 or later.
-//
-// Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
-// this source code is governed by a BSD-style license that can be found in
-// the LICENSE file.
+/*
+Package excelize providing a set of functions that allow you to write to
+and read from XLSX files. Support reads and writes XLSX file generated by
+Microsoft Excel™ 2007 and later. Support save file without losing original
+charts of XLSX. This library needs Go version 1.8 or later.
+
+Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
+this source code is governed by a BSD-style license that can be found in
+the LICENSE file.
+*/
 package excelize
 
 import (
diff --git a/sheet.go b/sheet.go
index ef2b6f4c40..a8d5ed7a5e 100644
--- a/sheet.go
+++ b/sheet.go
@@ -1,11 +1,13 @@
-// Package excelize providing a set of functions that allow you to write to
-// and read from XLSX files. Support reads and writes XLSX file generated by
-// Microsoft Excel™ 2007 and later. Support save file without losing original
-// charts of XLSX. This library needs Go version 1.8 or later.
-//
-// Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
-// this source code is governed by a BSD-style license that can be found in
-// the LICENSE file.
+/*
+Package excelize providing a set of functions that allow you to write to
+and read from XLSX files. Support reads and writes XLSX file generated by
+Microsoft Excel™ 2007 and later. Support save file without losing original
+charts of XLSX. This library needs Go version 1.8 or later.
+
+Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
+this source code is governed by a BSD-style license that can be found in
+the LICENSE file.
+*/
 package excelize
 
 import (
diff --git a/sheetpr.go b/sheetpr.go
index a010130a38..4216cb9128 100644
--- a/sheetpr.go
+++ b/sheetpr.go
@@ -1,11 +1,13 @@
-// Package excelize providing a set of functions that allow you to write to
-// and read from XLSX files. Support reads and writes XLSX file generated by
-// Microsoft Excel™ 2007 and later. Support save file without losing original
-// charts of XLSX. This library needs Go version 1.8 or later.
-//
-// Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
-// this source code is governed by a BSD-style license that can be found in
-// the LICENSE file.
+/*
+Package excelize providing a set of functions that allow you to write to
+and read from XLSX files. Support reads and writes XLSX file generated by
+Microsoft Excel™ 2007 and later. Support save file without losing original
+charts of XLSX. This library needs Go version 1.8 or later.
+
+Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
+this source code is governed by a BSD-style license that can be found in
+the LICENSE file.
+*/
 package excelize
 
 // SheetPrOption is an option of a view of a worksheet. See SetSheetPrOptions().
diff --git a/sheetview.go b/sheetview.go
index 5e756ead27..62b35a1b44 100644
--- a/sheetview.go
+++ b/sheetview.go
@@ -1,11 +1,13 @@
-// Package excelize providing a set of functions that allow you to write to
-// and read from XLSX files. Support reads and writes XLSX file generated by
-// Microsoft Excel™ 2007 and later. Support save file without losing original
-// charts of XLSX. This library needs Go version 1.8 or later.
-//
-// Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
-// this source code is governed by a BSD-style license that can be found in
-// the LICENSE file.
+/*
+Package excelize providing a set of functions that allow you to write to
+and read from XLSX files. Support reads and writes XLSX file generated by
+Microsoft Excel™ 2007 and later. Support save file without losing original
+charts of XLSX. This library needs Go version 1.8 or later.
+
+Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
+this source code is governed by a BSD-style license that can be found in
+the LICENSE file.
+*/
 package excelize
 
 import "fmt"
diff --git a/styles.go b/styles.go
index 80f347ecbd..ba5af3d5f4 100644
--- a/styles.go
+++ b/styles.go
@@ -1,11 +1,13 @@
-// Package excelize providing a set of functions that allow you to write to
-// and read from XLSX files. Support reads and writes XLSX file generated by
-// Microsoft Excel™ 2007 and later. Support save file without losing original
-// charts of XLSX. This library needs Go version 1.8 or later.
-//
-// Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
-// this source code is governed by a BSD-style license that can be found in
-// the LICENSE file.
+/*
+Package excelize providing a set of functions that allow you to write to
+and read from XLSX files. Support reads and writes XLSX file generated by
+Microsoft Excel™ 2007 and later. Support save file without losing original
+charts of XLSX. This library needs Go version 1.8 or later.
+
+Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
+this source code is governed by a BSD-style license that can be found in
+the LICENSE file.
+*/
 package excelize
 
 import (
diff --git a/table.go b/table.go
index fcc4d3c327..a7b71edd3a 100644
--- a/table.go
+++ b/table.go
@@ -1,11 +1,13 @@
-// Package excelize providing a set of functions that allow you to write to
-// and read from XLSX files. Support reads and writes XLSX file generated by
-// Microsoft Excel™ 2007 and later. Support save file without losing original
-// charts of XLSX. This library needs Go version 1.8 or later.
-//
-// Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
-// this source code is governed by a BSD-style license that can be found in
-// the LICENSE file.
+/*
+Package excelize providing a set of functions that allow you to write to
+and read from XLSX files. Support reads and writes XLSX file generated by
+Microsoft Excel™ 2007 and later. Support save file without losing original
+charts of XLSX. This library needs Go version 1.8 or later.
+
+Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
+this source code is governed by a BSD-style license that can be found in
+the LICENSE file.
+*/
 package excelize
 
 import (
diff --git a/templates.go b/templates.go
index a619dfc286..5f62f46a23 100644
--- a/templates.go
+++ b/templates.go
@@ -1,14 +1,16 @@
-// Package excelize providing a set of functions that allow you to write to
-// and read from XLSX files. Support reads and writes XLSX file generated by
-// Microsoft Excel™ 2007 and later. Support save file without losing original
-// charts of XLSX. This library needs Go version 1.8 or later.
-//
-// Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
-// this source code is governed by a BSD-style license that can be found in
-// the LICENSE file.
-//
-// This file contains default templates for XML files we don't yet populated
-// based on content.
+/*
+Package excelize providing a set of functions that allow you to write to
+and read from XLSX files. Support reads and writes XLSX file generated by
+Microsoft Excel™ 2007 and later. Support save file without losing original
+charts of XLSX. This library needs Go version 1.8 or later.
+
+Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
+this source code is governed by a BSD-style license that can be found in
+the LICENSE file.
+
+This file contains default templates for XML files we don't yet populated
+based on content.
+*/
 package excelize
 
 // XMLHeader define an XML declaration can also contain a standalone declaration.
diff --git a/vmlDrawing.go b/vmlDrawing.go
index f9323721c4..768ca2f503 100644
--- a/vmlDrawing.go
+++ b/vmlDrawing.go
@@ -1,11 +1,13 @@
-// Package excelize providing a set of functions that allow you to write to
-// and read from XLSX files. Support reads and writes XLSX file generated by
-// Microsoft Excel™ 2007 and later. Support save file without losing original
-// charts of XLSX. This library needs Go version 1.8 or later.
-//
-// Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
-// this source code is governed by a BSD-style license that can be found in
-// the LICENSE file.
+/*
+Package excelize providing a set of functions that allow you to write to
+and read from XLSX files. Support reads and writes XLSX file generated by
+Microsoft Excel™ 2007 and later. Support save file without losing original
+charts of XLSX. This library needs Go version 1.8 or later.
+
+Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
+this source code is governed by a BSD-style license that can be found in
+the LICENSE file.
+*/
 package excelize
 
 import "encoding/xml"
diff --git a/xmlChart.go b/xmlChart.go
index 8a2cfd8018..72ad4cee44 100644
--- a/xmlChart.go
+++ b/xmlChart.go
@@ -1,11 +1,13 @@
-// Package excelize providing a set of functions that allow you to write to
-// and read from XLSX files. Support reads and writes XLSX file generated by
-// Microsoft Excel™ 2007 and later. Support save file without losing original
-// charts of XLSX. This library needs Go version 1.8 or later.
-//
-// Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
-// this source code is governed by a BSD-style license that can be found in
-// the LICENSE file.
+/*
+Package excelize providing a set of functions that allow you to write to
+and read from XLSX files. Support reads and writes XLSX file generated by
+Microsoft Excel™ 2007 and later. Support save file without losing original
+charts of XLSX. This library needs Go version 1.8 or later.
+
+Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
+this source code is governed by a BSD-style license that can be found in
+the LICENSE file.
+*/
 package excelize
 
 import "encoding/xml"
diff --git a/xmlComments.go b/xmlComments.go
index 1607506cae..f16128d3d7 100644
--- a/xmlComments.go
+++ b/xmlComments.go
@@ -1,11 +1,13 @@
-// Package excelize providing a set of functions that allow you to write to
-// and read from XLSX files. Support reads and writes XLSX file generated by
-// Microsoft Excel™ 2007 and later. Support save file without losing original
-// charts of XLSX. This library needs Go version 1.8 or later.
-//
-// Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
-// this source code is governed by a BSD-style license that can be found in
-// the LICENSE file.
+/*
+Package excelize providing a set of functions that allow you to write to
+and read from XLSX files. Support reads and writes XLSX file generated by
+Microsoft Excel™ 2007 and later. Support save file without losing original
+charts of XLSX. This library needs Go version 1.8 or later.
+
+Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
+this source code is governed by a BSD-style license that can be found in
+the LICENSE file.
+*/
 package excelize
 
 import "encoding/xml"
diff --git a/xmlContentTypes.go b/xmlContentTypes.go
index 6c31bffa67..6abd0e67be 100644
--- a/xmlContentTypes.go
+++ b/xmlContentTypes.go
@@ -1,11 +1,13 @@
-// Package excelize providing a set of functions that allow you to write to
-// and read from XLSX files. Support reads and writes XLSX file generated by
-// Microsoft Excel™ 2007 and later. Support save file without losing original
-// charts of XLSX. This library needs Go version 1.8 or later.
-//
-// Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
-// this source code is governed by a BSD-style license that can be found in
-// the LICENSE file.
+/*
+Package excelize providing a set of functions that allow you to write to
+and read from XLSX files. Support reads and writes XLSX file generated by
+Microsoft Excel™ 2007 and later. Support save file without losing original
+charts of XLSX. This library needs Go version 1.8 or later.
+
+Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
+this source code is governed by a BSD-style license that can be found in
+the LICENSE file.
+*/
 package excelize
 
 import "encoding/xml"
diff --git a/xmlDecodeDrawing.go b/xmlDecodeDrawing.go
index c85c490d3d..c66176c725 100644
--- a/xmlDecodeDrawing.go
+++ b/xmlDecodeDrawing.go
@@ -1,11 +1,13 @@
-// Package excelize providing a set of functions that allow you to write to
-// and read from XLSX files. Support reads and writes XLSX file generated by
-// Microsoft Excel™ 2007 and later. Support save file without losing original
-// charts of XLSX. This library needs Go version 1.8 or later.
-//
-// Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
-// this source code is governed by a BSD-style license that can be found in
-// the LICENSE file.
+/*
+Package excelize providing a set of functions that allow you to write to
+and read from XLSX files. Support reads and writes XLSX file generated by
+Microsoft Excel™ 2007 and later. Support save file without losing original
+charts of XLSX. This library needs Go version 1.8 or later.
+
+Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
+this source code is governed by a BSD-style license that can be found in
+the LICENSE file.
+*/
 package excelize
 
 import "encoding/xml"
diff --git a/xmlDrawing.go b/xmlDrawing.go
index ee30a4ddf1..633856a2d2 100644
--- a/xmlDrawing.go
+++ b/xmlDrawing.go
@@ -1,11 +1,13 @@
-// Package excelize providing a set of functions that allow you to write to
-// and read from XLSX files. Support reads and writes XLSX file generated by
-// Microsoft Excel™ 2007 and later. Support save file without losing original
-// charts of XLSX. This library needs Go version 1.8 or later.
-//
-// Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
-// this source code is governed by a BSD-style license that can be found in
-// the LICENSE file.
+/*
+Package excelize providing a set of functions that allow you to write to
+and read from XLSX files. Support reads and writes XLSX file generated by
+Microsoft Excel™ 2007 and later. Support save file without losing original
+charts of XLSX. This library needs Go version 1.8 or later.
+
+Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
+this source code is governed by a BSD-style license that can be found in
+the LICENSE file.
+*/
 package excelize
 
 import "encoding/xml"
diff --git a/xmlSharedStrings.go b/xmlSharedStrings.go
index 94959c65dc..1f31f99ec9 100644
--- a/xmlSharedStrings.go
+++ b/xmlSharedStrings.go
@@ -1,11 +1,13 @@
-// Package excelize providing a set of functions that allow you to write to
-// and read from XLSX files. Support reads and writes XLSX file generated by
-// Microsoft Excel™ 2007 and later. Support save file without losing original
-// charts of XLSX. This library needs Go version 1.8 or later.
-//
-// Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
-// this source code is governed by a BSD-style license that can be found in
-// the LICENSE file.
+/*
+Package excelize providing a set of functions that allow you to write to
+and read from XLSX files. Support reads and writes XLSX file generated by
+Microsoft Excel™ 2007 and later. Support save file without losing original
+charts of XLSX. This library needs Go version 1.8 or later.
+
+Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
+this source code is governed by a BSD-style license that can be found in
+the LICENSE file.
+*/
 package excelize
 
 import "encoding/xml"
diff --git a/xmlStyles.go b/xmlStyles.go
index 3024c1e2b3..5b3c9e0151 100644
--- a/xmlStyles.go
+++ b/xmlStyles.go
@@ -1,11 +1,13 @@
-// Package excelize providing a set of functions that allow you to write to
-// and read from XLSX files. Support reads and writes XLSX file generated by
-// Microsoft Excel™ 2007 and later. Support save file without losing original
-// charts of XLSX. This library needs Go version 1.8 or later.
-//
-// Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
-// this source code is governed by a BSD-style license that can be found in
-// the LICENSE file.
+/*
+Package excelize providing a set of functions that allow you to write to
+and read from XLSX files. Support reads and writes XLSX file generated by
+Microsoft Excel™ 2007 and later. Support save file without losing original
+charts of XLSX. This library needs Go version 1.8 or later.
+
+Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
+this source code is governed by a BSD-style license that can be found in
+the LICENSE file.
+*/
 package excelize
 
 import "encoding/xml"
diff --git a/xmlTable.go b/xmlTable.go
index 53a5af432a..3949d49446 100644
--- a/xmlTable.go
+++ b/xmlTable.go
@@ -1,11 +1,13 @@
-// Package excelize providing a set of functions that allow you to write to
-// and read from XLSX files. Support reads and writes XLSX file generated by
-// Microsoft Excel™ 2007 and later. Support save file without losing original
-// charts of XLSX. This library needs Go version 1.8 or later.
-//
-// Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
-// this source code is governed by a BSD-style license that can be found in
-// the LICENSE file.
+/*
+Package excelize providing a set of functions that allow you to write to
+and read from XLSX files. Support reads and writes XLSX file generated by
+Microsoft Excel™ 2007 and later. Support save file without losing original
+charts of XLSX. This library needs Go version 1.8 or later.
+
+Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
+this source code is governed by a BSD-style license that can be found in
+the LICENSE file.
+*/
 package excelize
 
 import "encoding/xml"
diff --git a/xmlTheme.go b/xmlTheme.go
index e72e53b98a..b9dd2bbcc3 100644
--- a/xmlTheme.go
+++ b/xmlTheme.go
@@ -1,11 +1,13 @@
-// Package excelize providing a set of functions that allow you to write to
-// and read from XLSX files. Support reads and writes XLSX file generated by
-// Microsoft Excel™ 2007 and later. Support save file without losing original
-// charts of XLSX. This library needs Go version 1.8 or later.
-//
-// Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
-// this source code is governed by a BSD-style license that can be found in
-// the LICENSE file.
+/*
+Package excelize providing a set of functions that allow you to write to
+and read from XLSX files. Support reads and writes XLSX file generated by
+Microsoft Excel™ 2007 and later. Support save file without losing original
+charts of XLSX. This library needs Go version 1.8 or later.
+
+Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
+this source code is governed by a BSD-style license that can be found in
+the LICENSE file.
+*/
 package excelize
 
 import "encoding/xml"
diff --git a/xmlWorkbook.go b/xmlWorkbook.go
index d194bac46d..ca17d0356b 100644
--- a/xmlWorkbook.go
+++ b/xmlWorkbook.go
@@ -1,11 +1,13 @@
-// Package excelize providing a set of functions that allow you to write to
-// and read from XLSX files. Support reads and writes XLSX file generated by
-// Microsoft Excel™ 2007 and later. Support save file without losing original
-// charts of XLSX. This library needs Go version 1.8 or later.
-//
-// Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
-// this source code is governed by a BSD-style license that can be found in
-// the LICENSE file.
+/*
+Package excelize providing a set of functions that allow you to write to
+and read from XLSX files. Support reads and writes XLSX file generated by
+Microsoft Excel™ 2007 and later. Support save file without losing original
+charts of XLSX. This library needs Go version 1.8 or later.
+
+Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
+this source code is governed by a BSD-style license that can be found in
+the LICENSE file.
+*/
 package excelize
 
 import "encoding/xml"
diff --git a/xmlWorksheet.go b/xmlWorksheet.go
index e298329d81..c481a6d09b 100644
--- a/xmlWorksheet.go
+++ b/xmlWorksheet.go
@@ -1,11 +1,13 @@
-// Package excelize providing a set of functions that allow you to write to
-// and read from XLSX files. Support reads and writes XLSX file generated by
-// Microsoft Excel™ 2007 and later. Support save file without losing original
-// charts of XLSX. This library needs Go version 1.8 or later.
-//
-// Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
-// this source code is governed by a BSD-style license that can be found in
-// the LICENSE file.
+/*
+Package excelize providing a set of functions that allow you to write to
+and read from XLSX files. Support reads and writes XLSX file generated by
+Microsoft Excel™ 2007 and later. Support save file without losing original
+charts of XLSX. This library needs Go version 1.8 or later.
+
+Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
+this source code is governed by a BSD-style license that can be found in
+the LICENSE file.
+*/
 package excelize
 
 import "encoding/xml"