Mirocow
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diff --git a/‎Documentation/Examples/Reading WorkBook Data/exampleWorkBookReader02.php
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diff --git a/‎Documentation/markdown/CalculationEngine/FunctionReference/01-Introduction.md
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diff --git a/‎Documentation/markdown/CalculationEngine/FunctionReference/03-03-Date-and-Time-Functions.md
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diff --git a/‎Documentation/markdown/Features/Autofilters/03-Autofilter-Expressions.md
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diff --git a/‎Documentation/markdown/Overview/01-Getting-Started.md
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diff --git a/‎Documentation/markdown/Overview/07-Accessing-Cells.md
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diff --git a/‎Documentation/markdown/ReadingSpreadsheetFiles/01-File-Formats.md
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@@ -29,6 +29,26 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 - c:max and c:min elements shall NOT be inside c:orientation elements - @vitalyrepin [#869](https://github.com/PHPOffice/PHPExcel/pull/869)
 - Implement actual timezone adjustment into PHPExcel_Shared_Date::PHPToExcel - @sim642 [#489](https://github.com/PHPOffice/PHPExcel/pull/489)
 
+### BREAKING CHANGE
+
+- Introduction of namespaces for all classes, eg: `PHPExcel_Calculation_Function` becomes `PhpOffice\PhpSpreadsheet\Calculation\Functions`
+- Some classes were renamed for clarity and/or consistency:
+
+| Before                          | After                                     |
+|---------------------------------|-------------------------------------------|
+| `PHPExcel`                      | `PhpOffice\PhpSpreadsheet\Spreadsheet`    |
+| `PHPExcel_Reader_Excel2007`     | `PhpOffice\PhpSpreadsheet\Reader\Xlsx`    |
+| `PHPExcel_Writer_Excel2007`     | `PhpOffice\PhpSpreadsheet\Writer\Xlsx`    |
+
+- Some methods were renamed for clarity and/or consistency:
+
+| Before                                           | After                                                      |
+|--------------------------------------------------|------------------------------------------------------------|
+| `PHPExcel_Calculation_DateTime::DAYOFWEEK()`     | `PhpOffice\PhpSpreadsheet\Calculation\DateTime::WEEKDAY()` |
+| `PHPExcel_Calculation_DateTime::WEEKOFYEAR()`    | `PhpOffice\PhpSpreadsheet\Calculation\DateTime::WEEKNUM()` |
+| `PHPExcel_Calculation_DateTime::MINUTEOFHOUR()`  | `PhpOffice\PhpSpreadsheet\Calculation\DateTime::MINUTE()`  |
+| `PHPExcel_Calculation_DateTime::SECONDOFMINUTE()`| `PhpOffice\PhpSpreadsheet\Calculation\DateTime::SECOND()`  |
+
 
 ## [1.8.1] - 2015-04-30
 
 
@@ -27,7 +27,7 @@
 
 
 $inputFileType = 'Excel5';
-//	$inputFileType = 'Excel2007';
+//	$inputFileType = 'Xlsx';
 //	$inputFileType = 'Excel2003XML';
 //	$inputFileType = 'OOCalc';
 //	$inputFileType = 'SYLK';
 
@@ -27,7 +27,7 @@
 
 
 $inputFileType = 'Excel5';
-//	$inputFileType = 'Excel2007';
+//	$inputFileType = 'Xlsx';
 //	$inputFileType = 'Excel2003XML';
 //	$inputFileType = 'OOCalc';
 //	$inputFileType = 'Gnumeric';
 
@@ -27,7 +27,7 @@
 
 
 $inputFileType = 'Excel5';
-//	$inputFileType = 'Excel2007';
+//	$inputFileType = 'Xlsx';
 //	$inputFileType = 'Excel2003XML';
 //	$inputFileType = 'OOCalc';
 //	$inputFileType = 'Gnumeric';
 
@@ -27,7 +27,7 @@
 
 
 $inputFileType = 'Excel5';
-//	$inputFileType = 'Excel2007';
+//	$inputFileType = 'Xlsx';
 //	$inputFileType = 'Excel2003XML';
 //	$inputFileType = 'OOCalc';
 //	$inputFileType = 'Gnumeric';
 
@@ -27,7 +27,7 @@
 
 
 $inputFileType = 'Excel5';
-//	$inputFileType = 'Excel2007';
+//	$inputFileType = 'Xlsx';
 //	$inputFileType = 'Excel2003XML';
 //	$inputFileType = 'OOCalc';
 //	$inputFileType = 'Gnumeric';
 
@@ -27,7 +27,7 @@
 
 
 $inputFileType = 'Excel5';
-//	$inputFileType = 'Excel2007';
+//	$inputFileType = 'Xlsx';
 //	$inputFileType = 'Excel2003XML';
 //	$inputFileType = 'OOCalc';
 //	$inputFileType = 'Gnumeric';
 
@@ -27,7 +27,7 @@
 
 
 $inputFileType = 'Excel5';
-//	$inputFileType = 'Excel2007';
+//	$inputFileType = 'Xlsx';
 //	$inputFileType = 'Excel2003XML';
 //	$inputFileType = 'OOCalc';
 //	$inputFileType = 'Gnumeric';
 
@@ -27,7 +27,7 @@
 
 
 $inputFileType = 'Excel5';
-//	$inputFileType = 'Excel2007';
+//	$inputFileType = 'Xlsx';
 //	$inputFileType = 'Excel2003XML';
 //	$inputFileType = 'OOCalc';
 //	$inputFileType = 'Gnumeric';
 
@@ -27,7 +27,7 @@
 
 
 $inputFileType = 'Excel5';
-//	$inputFileType = 'Excel2007';
+//	$inputFileType = 'Xlsx';
 //	$inputFileType = 'Excel2003XML';
 //	$inputFileType = 'OOCalc';
 //	$inputFileType = 'Gnumeric';
 
@@ -27,7 +27,7 @@
 
 
 $inputFileType = 'Excel5';
-//	$inputFileType = 'Excel2007';
+//	$inputFileType = 'Xlsx';
 //	$inputFileType = 'Excel2003XML';
 //	$inputFileType = 'OOCalc';
 //	$inputFileType = 'Gnumeric';
 
@@ -27,7 +27,7 @@
 
 
 $inputFileType = 'Excel5';
-//	$inputFileType = 'Excel2007';
+//	$inputFileType = 'Xlsx';
 //	$inputFileType = 'Excel2003XML';
 //	$inputFileType = 'OOCalc';
 //	$inputFileType = 'Gnumeric';
 
@@ -27,7 +27,7 @@
 
 
 $inputFileType = 'Excel5';
-//	$inputFileType = 'Excel2007';
+//	$inputFileType = 'Xlsx';
 //	$inputFileType = 'Excel2003XML';
 //	$inputFileType = 'OOCalc';
 //	$inputFileType = 'Gnumeric';
 
@@ -26,7 +26,7 @@
 include 'PHPExcel/IOFactory.php';
 
 
-$inputFileType = 'Excel2007';
+$inputFileType = 'Xlsx';
 $inputFileName = './sampleData/example1.xlsx';
 
 /**  Create a new Reader of the type defined in $inputFileType  **/
 
@@ -26,7 +26,7 @@
 include 'PHPExcel/IOFactory.php';
 
 
-$inputFileType = 'Excel2007';
+$inputFileType = 'Xlsx';
 $inputFileName = './sampleData/example1.xlsx';
 
 /**  Create a new Reader of the type defined in $inputFileType  **/
 
@@ -6,6 +6,6 @@ The up-to-date F.A.Q. page for PHPExcel can be found on [http://www.codeplex.com
 
 ### Formulas don’t seem to be calculated in Excel2003 using compatibility pack?
 
-This is normal behaviour of the compatibility pack, Excel2007 displays this correctly. Use PHPExcel_Writer_Excel5 if you really need calculated values, or force recalculation in Excel2003.
+This is normal behaviour of the compatibility pack, Xlsx displays this correctly. Use PHPExcel_Writer_Excel5 if you really need calculated values, or force recalculation in Excel2003.
 
   [1]: http://www.codeplex.com/PHPExcel/Wiki/View.aspx?title=FAQ&referringTitle=Requirements
@@ -299,7 +299,7 @@ DATEVALUE uses the php date/time object implementation of strtotime() (which can
 
 __WARNING:-__ PHPExcel accepts a wider range of date formats than MS Excel, so it is entirely possible that Excel will return a #VALUE! error when passed a date string that it can’t interpret, while PHPExcel is able to translate that same string into a correct date value.
 
-Care should be taken in workbooks that use string formatted dates in calculations when writing to Excel5 or Excel2007.
+Care should be taken in workbooks that use string formatted dates in calculations when writing to Excel5 or Xlsx.
 
 #### DAY
 
 
@@ -3,7 +3,7 @@
 
 ## Autofilter Expressions
 
-PHPEXcel 1.7.8 introduced the ability to actually create, read and write filter expressions; initially only for Excel2007 files, but later releases will extend this to other formats.
+PHPEXcel 1.7.8 introduced the ability to actually create, read and write filter expressions; initially only for Xlsx files, but later releases will extend this to other formats.
 
 To apply a filter expression to an autoFilter range, you first need to identify which column you're going to be applying this filter to.
 
 
@@ -73,19 +73,19 @@ It is necessary to use UTF-8 encoding for all texts in PHPExcel. If the script u
 
 Make sure you meet all requirements, especially php_zip extension should be enabled.
 
-The ZipArchive class is only required when reading or writing formats that use Zip compression (Excel2007 and OOCalc). Since version 1.7.6 the PCLZip library has been bundled with PHPExcel as an alternative to the ZipArchive class.
+The ZipArchive class is only required when reading or writing formats that use Zip compression (Xlsx and OOCalc). Since version 1.7.6 the PCLZip library has been bundled with PHPExcel as an alternative to the ZipArchive class.
 
 This can be enabled by calling:
 ```php
 PHPExcel_Settings::setZipClass(PHPExcel_Settings::PCLZIP);
 ```
-*before* calling the save method of the Excel2007 Writer.
+*before* calling the save method of the Xlsx Writer.
 
 You can revert to using ZipArchive by calling:
 ```php
 PHPExcel_Settings::setZipClass(PHPExcel_Settings::ZIPARCHIVE);
 ```
-At present, this only allows you to write Excel2007 files without the need for ZipArchive (not to read Excel2007 or OOCalc)
+At present, this only allows you to write Xlsx files without the need for ZipArchive (not to read Xlsx or OOCalc)
 
 ##### Excel 2007 cannot open the file generated by PHPExcel_Writer_2007 on Windows
 
@@ -95,7 +95,7 @@ Some older versions of the 5.2.x php_zip extension on Windows contain an error w
 
 Alternatively, upgrading to at least PHP 5.2.9 should solve the problem.
 
-If you can't locate a clean copy of ZipArchive, then you can use the PCLZip library as an alternative when writing Excel2007 files, as described above.
+If you can't locate a clean copy of ZipArchive, then you can use the PCLZip library as an alternative when writing Xlsx files, as described above.
 
 ##### Fatal error: Allowed memory size of xxx bytes exhausted (tried to allocate yyy bytes) in zzz on line aaa
 
@@ -122,7 +122,7 @@ We are slowly building up a list of features, together with the different reader
 
 ##### Formulas don't seem to be calculated in Excel2003 using compatibility pack?
 
-This is normal behaviour of the compatibility pack, Excel2007 displays this correctly. Use PHPExcel_Writer_Excel5 if you really need calculated values, or force recalculation in Excel2003.
+This is normal behaviour of the compatibility pack, Xlsx displays this correctly. Use PHPExcel_Writer_Excel5 if you really need calculated values, or force recalculation in Excel2003.
 
 ##### Setting column width is not 100% accurate
 
@@ -177,5 +177,5 @@ Thanks to peterrlynch for the following advice on resolving issues between the [
   [21]: http://journal.mycom.co.jp/articles/2009/03/06/phpexcel/index.html
 
 
-[^phpzip_footnote]: __php_zip__ is only needed by __PHPExcel_Reader_Excel2007__, __PHPExcel_Writer_Excel2007__ and __PHPExcel_Reader_OOCalc__. In other words, if you need PHPExcel to handle .xlsx or .ods files you will need the zip extension, but otherwise not.<br />You can remove this dependency for writing Excel2007 files (though not yet for reading) by using the PCLZip library that is bundled with PHPExcel. See the FAQ section of this document for details about this. PCLZip does have a dependency on PHP's zlib extension being enabled.
+[^phpzip_footnote]: __php_zip__ is only needed by __PHPExcel_Reader_Excel2007__, __PHPExcel_Writer_Excel2007__ and __PHPExcel_Reader_OOCalc__. In other words, if you need PHPExcel to handle .xlsx or .ods files you will need the zip extension, but otherwise not.<br />You can remove this dependency for writing Xlsx files (though not yet for reading) by using the PCLZip library that is bundled with PHPExcel. See the FAQ section of this document for details about this. PCLZip does have a dependency on PHP's zlib extension being enabled.
 
@@ -127,7 +127,7 @@ $objPHPExcel->getActiveSheet()->getStyle('A10')
 ![07-simple-example-1.png](./images/07-simple-example-1.png "")
 
 
-**Note** that not all complex format masks such as this one will work when retrieving a formatted value to display "on screen", or for certain writers such as HTML or PDF, but it will work with the true spreadsheet writers (Excel2007 and Excel5).
+**Note** that not all complex format masks such as this one will work when retrieving a formatted value to display "on screen", or for certain writers such as HTML or PDF, but it will work with the true spreadsheet writers (Xlsx and Excel5).
 
 ### Setting a range of cells from an array
 
@@ -266,7 +266,7 @@ The easiest way to loop cells is by using iterators. Using iterators, one can us
 Below is an example where we read all the values in a worksheet and display them in a table.
 
 ```php
-$objReader = PHPExcel_IOFactory::createReader('Excel2007');
+$objReader = PHPExcel_IOFactory::createReader('Xlsx');
 $objReader->setReadDataOnly(TRUE);
 $objPHPExcel = $objReader->load("test.xlsx");
 
@@ -304,7 +304,7 @@ Note: In PHPExcel column index is 0-based while row index is 1-based. That means
 Below is an example where we read all the values in a worksheet and display them in a table.
 
 ```php
-$objReader = PHPExcel_IOFactory::createReader('Excel2007');
+$objReader = PHPExcel_IOFactory::createReader('Xlsx');
 $objReader->setReadDataOnly(TRUE);
 $objPHPExcel = $objReader->load("test.xlsx");
 
@@ -331,7 +331,7 @@ echo '</table>' . PHP_EOL;
 Alternatively, you can take advantage of PHP's "Perl-style" character incrementors to loop through the cells by coordinate:
 
 ```php
-$objReader = PHPExcel_IOFactory::createReader('Excel2007');
+$objReader = PHPExcel_IOFactory::createReader('Xlsx');
 $objReader->setReadDataOnly(TRUE);
 $objPHPExcel = $objReader->load("test.xlsx");
 
 
@@ -328,7 +328,7 @@ The first occurrence of the following codes turns the formatting ON, the second
 
 Superscript and subscript cannot both be ON at same time. Whichever comes first wins and the other is ignored, while the first is ON.
 
-The following codes are supported by Excel2007:
+The following codes are supported by Xlsx:
 
 Code                   | Meaning
 -----------------------|-----------
@@ -545,10 +545,10 @@ $objPHPExcel->getActiveSheet()->getStyle('A1')->getNumberFormat()
 __Tip__
 The rules for composing a number format code in Excel can be rather complicated. Sometimes you know how to create some number format in Microsoft Office Excel, but don't know what the underlying number format code looks like. How do you find it?
 
-The readers shipped with PHPExcel come to the rescue. Load your template workbook using e.g. Excel2007 reader to reveal the number format code. Example how read a number format code for cell A1:
+The readers shipped with PHPExcel come to the rescue. Load your template workbook using e.g. Xlsx reader to reveal the number format code. Example how read a number format code for cell A1:
 
 ```php
-$objReader = PHPExcel_IOFactory::createReader('Excel2007');
+$objReader = PHPExcel_IOFactory::createReader('Xlsx');
 $objPHPExcel = $objReader->load('template.xlsx');
 var_dump($objPHPExcel->getActiveSheet()->getStyle('A1')->getNumberFormat()->getFormatCode());
 ```
@@ -745,7 +745,7 @@ $objPHPExcel->getActiveSheet()->getProtection()->setSheet(true);
 
 ### Setting data validation on a cell
 
-Data validation is a powerful feature of Excel2007. It allows to specify an input filter on the data that can be inserted in a specific cell. This filter can be a range (i.e. value must be between 0 and 10), a list (i.e. value must be picked from a list), ...
+Data validation is a powerful feature of Xlsx. It allows to specify an input filter on the data that can be inserted in a specific cell. This filter can be a range (i.e. value must be between 0 and 10), a list (i.e. value must be picked from a list), ...
 
 The following piece of code only allows numbers between 10 and 20 to be entered in cell B3:
 
@@ -1078,7 +1078,7 @@ header('Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetm
 header('Content-Disposition: attachment;filename="myfile.xlsx"');
 header('Cache-Control: max-age=0');
 
-$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
+$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Xlsx');
 $objWriter->save('php://output');
 ```
 
 
@@ -35,7 +35,7 @@ $objReader->load("05featuredemo.xlsx");
 You can create a PHPExcel_Reader_IReader instance using PHPExcel_IOFactory in explicit mode using the following code sample:
 
 ```php
-$objReader = PHPExcel_IOFactory::createReader("Excel2007");
+$objReader = PHPExcel_IOFactory::createReader("Xlsx");
 $objPHPExcel = $objReader->load("05featuredemo.xlsx");
 ```
 
@@ -46,13 +46,13 @@ Note that automatic type resolving mode is slightly slower than explicit mode.
 You can create a PHPExcel_Writer_Iwriter instance using PHPExcel_IOFactory:
 
 ```php
-$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, "Excel2007");
+$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, "Xlsx");
 $objWriter->save("05featuredemo.xlsx");
 ```
 
 ### Excel 2007 (SpreadsheetML) file format
 
-Excel2007 file format is the main file format of PHPExcel. It allows outputting the in-memory spreadsheet to a .xlsx file.
+Xlsx file format is the main file format of PHPExcel. It allows outputting the in-memory spreadsheet to a .xlsx file.
 
 #### PHPExcel_Reader_Excel2007
 
@@ -131,7 +131,7 @@ $objWriter->save("05featuredemo.xlsx");
 
 ##### Office 2003 compatibility pack
 
-Because of a bug in the Office2003 compatibility pack, there can be some small issues when opening Excel2007 spreadsheets (mostly related to formula calculation). You can enable Office2003 compatibility with the following code:
+Because of a bug in the Office2003 compatibility pack, there can be some small issues when opening Xlsx spreadsheets (mostly related to formula calculation). You can enable Office2003 compatibility with the following code:
 
 ```
 $objWriter = new PHPExcel_Writer_Excel2007($objPHPExcel);
 
@@ -15,7 +15,7 @@ The Microsoft Excel™ Binary file format (BIFF5 and BIFF8) is a binary file for
 
 Microsoft Excel™ 2003 included options for a file format called SpreadsheetML. This file is a zipped XML document. It is not very common, but its core features are supported. Documentation for the format can be found at [http://msdn.microsoft.com/en-us/library/aa140066%28office.10%29.aspx][3] though it’s sadly rather sparse in its detail.
 
-### Excel2007
+### Xlsx
 
 Microsoft Excel™ 2007 shipped with a new file format, namely Microsoft Office Open XML SpreadsheetML, and Excel 2010 extended this still further with its new features such as sparklines. These files typically have an extension of .xlsx. This format is based around a zipped collection of eXtensible Markup Language (XML) files. Microsoft Office Open XML SpreadsheetML is mostly standardized in ECMA 376 ([http://www.ecma-international.org/news/TC45_current_work/TC45_available_docs.htm][4]) and ISO 29500.
 
 
@@ -25,7 +25,7 @@ Alternatively, you can use the IO Factory's createReader() method to instantiate
 
 ```php
 $inputFileType = 'Excel5';
-//    $inputFileType = 'Excel2007';
+//    $inputFileType = 'Xlsx';
 //    $inputFileType = 'Excel2003XML';
 //    $inputFileType = 'OOCalc';
 //    $inputFileType = 'SYLK';