Spellcheck fixes.

Readme.md

@@ -18,7 +18,7 @@ It supports features such as:
 - Merged cells.
 - Defined names.
 - Autofilters.
-- Memory optimisation mode for writing large files.
+- Memory optimization mode for writing large files.
 - Source code available on [GitHub](https://github.com/jmcnamara/libxlsxwriter).
 - FreeBSD ref license.
 - ANSI C.

docs/src/bugs.dox

@@ -57,7 +57,7 @@ formula using the worksheet_write_formula_num() function.
 
 ## Strings aren't displayed in Apple Numbers in 'constant_memory' mode
 
-In new_workbook_opt `constant_memory` mode libxlsxwriter uses an optimisation
+In new_workbook_opt `constant_memory` mode libxlsxwriter uses an optimization
 where cell strings aren't stored in an Excel structure call "shared strings"
 and instead are written "in-line".
 

docs/src/mainpage.dox

@@ -18,7 +18,7 @@ features such as:
 - Merged cells.
 - Defined names.
 - Autofilters.
-- Memory optimisation mode for writing large files.
+- Memory optimization mode for writing large files.
 - Source code available on [GitHub](https://github.com/jmcnamara/libxlsxwriter).
 - FreeBSD @ref license.
 - ANSI C.

docs/src/working_with_memory.dox

@@ -19,7 +19,7 @@ new_workbook_opt() and the lxw_workbook_options `constant_memory` property:
 @until    return
 @skipline }
 
-This optimisation works by flushing each row after a subsequent row is written.
+This optimization works by flushing each row after a subsequent row is written.
 In this way the largest amount of data held in memory for a worksheet is the
 amount of data required to hold a single row of data.
 
@@ -55,7 +55,7 @@ row order when `constant_memory` mode is on:
 Inline strings
 --------------
 
-Another optimisation that is used to reduce memory usage in `constant_memory`
+Another optimization that is used to reduce memory usage in `constant_memory`
 mode is that cell strings aren't stored in an Excel structure call "shared
 strings" and instead are written "in-line". This is a documented Excel feature
 that is supported by most spreadsheet applications. One known exception is

include/xlsxwriter/worksheet.h

@@ -441,7 +441,7 @@ typedef struct lxw_worksheet {
 } lxw_worksheet;
 
 /*
- * Worksheet initialisation data.
+ * Worksheet initialization data.
  */
 typedef struct lxw_worksheet_init_data {
     uint32_t index;

include/xlsxwriter/xmlwriter.h

@@ -10,7 +10,7 @@
  * in the Excel XLSX file format.
  *
  * This library is used in preference to a more generic XML library to allow
- * for customization and optimisation for the XLSX file format.
+ * for customization and optimization for the XLSX file format.
  *
  * The xmlwriter functions are only used internally and do not need to be
  * called directly by the end user.
@@ -109,7 +109,7 @@ void _xml_start_tag(FILE * xmlfile,
 
 /**
  * Write an XML start tag with optional un-encoded attributes.
- * This is a minor optimisation for attributes that don't need encoding.
+ * This is a minor optimization for attributes that don't need encoding.
  *
  * @param xmlfile    A FILE pointer to the output XML file.
  * @param tag        The XML tag to write.
@@ -139,7 +139,7 @@ void _xml_empty_tag(FILE * xmlfile,
 
 /**
  * Write an XML empty tag with optional un-encoded attributes.
- * This is a minor optimisation for attributes that don't need encoding.
+ * This is a minor optimization for attributes that don't need encoding.
  *
  * @param xmlfile    A FILE pointer to the output XML file.
  * @param tag        The XML tag to write.

src/worksheet.c

@@ -1222,7 +1222,7 @@ _worksheet_write_sheet_data(lxw_worksheet *self)
 }
 
 /*
- * Write the <sheetData> element when the memory optimisation is on. In which
+ * Write the <sheetData> element when the memory optimization is on. In which
  * case we read the data stored in the temp file and rewrite it to the XML
  * sheet file.
  */
@@ -1541,7 +1541,7 @@ _write_inline_string_cell(lxw_worksheet *self, lxw_cell *cell)
 
 /*
  * Calculate the "spans" attribute of the <row> tag. This is an XLSX
- * optimisation and isn't strictly required. However, it makes comparing
+ * optimization and isn't strictly required. However, it makes comparing
  * files easier.
  *
  * The span is the same for each block of 16 rows.
@@ -1681,7 +1681,7 @@ _worksheet_write_rows(lxw_worksheet *self)
 
 /*
  * Write out the worksheet data as a single row with cells. This method is
- * used when memory optimisation is on. A single row is written and the data
+ * used when memory optimization is on. A single row is written and the data
  * array is reset. That way only one row of data is kept in memory at any one
  * time. We don't write span data in the optimized case since it is optional.
  */

src/xmlwriter.c

@@ -51,7 +51,7 @@ _xml_start_tag(FILE * xmlfile,
 
 /*
  * Write an XML start tag with optional, unencoded, attributes.
- * This is a minor speed optimisation for elements that don't need encoding.
+ * This is a minor speed optimization for elements that don't need encoding.
  */
 void
 _xml_start_tag_unencoded(FILE * xmlfile,