diff --git a/scintilla/doc/ScintillaDownload.html b/scintilla/doc/ScintillaDownload.html
index c5a126b65..41bbd9c86 100644
--- a/scintilla/doc/ScintillaDownload.html
+++ b/scintilla/doc/ScintillaDownload.html
@@ -26,9 +26,9 @@
     <table bgcolor="#CCCCCC" width="100%" cellspacing="0" cellpadding="8" border="0">
       <tr>
         <td>
-          <font size="4"> <a href="http://www.scintilla.org/scintilla402.zip">
+          <font size="4"> <a href="http://www.scintilla.org/scintilla403.zip">
 	Windows</a>&nbsp;&nbsp;
-	<a href="http://www.scintilla.org/scintilla402.tgz">
+	<a href="http://www.scintilla.org/scintilla403.tgz">
           GTK+/Linux</a>&nbsp;&nbsp;
 	</font>
         </td>
@@ -42,7 +42,7 @@
       containing very few restrictions.
     </p>
     <h3>
-       Release 4.0.2
+       Release 4.0.3
     </h3>
     <h4>
        Source Code
@@ -50,8 +50,8 @@
        The source code package contains all of the source code for Scintilla but no binary
 	executable code and is available in
        <ul>
-       <li><a href="http://www.scintilla.org/scintilla402.zip">zip format</a> (1600K) commonly used on Windows</li>
-       <li><a href="http://www.scintilla.org/scintilla402.tgz">tgz format</a> (1400K) commonly used on Linux and compatible operating systems</li>
+       <li><a href="http://www.scintilla.org/scintilla403.zip">zip format</a> (1600K) commonly used on Windows</li>
+       <li><a href="http://www.scintilla.org/scintilla403.tgz">tgz format</a> (1400K) commonly used on Linux and compatible operating systems</li>
        </ul>
        Instructions for building on both Windows and Linux are included in the readme file.
     <h4>
diff --git a/scintilla/doc/ScintillaHistory.html b/scintilla/doc/ScintillaHistory.html
index 6abca8d23..cbbe28839 100644
--- a/scintilla/doc/ScintillaHistory.html
+++ b/scintilla/doc/ScintillaHistory.html
@@ -536,7 +536,12 @@
     </h3>
     <ul>
 	<li>
-	Released 26 October 2017.
+	Released 12 February 2018.
+	</li>
+	<li>
+	Features from C++14 and C++17 are used more often, with build files now specifying
+	c++17, gnu++17, c++1z, or std:c++latest (MSVC).
+	Requires Microsoft Visual C++ 2017.5, GCC 7, Xcode 9.2 or Clang 4.0 or newer.
 	</li>
 	<li>
 	SCI_CREATEDOCUMENT adds a bytes argument to allocate memory for an initial size.
diff --git a/scintilla/doc/index.html b/scintilla/doc/index.html
index af84d41bf..5d328da12 100644
--- a/scintilla/doc/index.html
+++ b/scintilla/doc/index.html
@@ -9,7 +9,7 @@
     <meta name="keywords" content="Scintilla, SciTE, Editing Component, Text Editor" />
     <meta name="Description"
     content="www.scintilla.org is the home of the Scintilla editing component and SciTE text editor application." />
-    <meta name="Date.Modified" content="20171026" />
+    <meta name="Date.Modified" content="20180212" />
     <meta name="viewport" content="width=device-width, initial-scale=1" />
     <style type="text/css">
         #versionlist {
@@ -56,8 +56,8 @@
           GTK+, and OS X</font>
         </td>
         <td width="40%" align="right">
-          <font color="#FFCC99" size="3"> Release version 4.0.2<br />
-           Site last modified October 26 2017</font>
+          <font color="#FFCC99" size="3"> Release version 4.0.3<br />
+           Site last modified February 12 2018</font>
         </td>
         <td width="20%">
           &nbsp;
@@ -72,14 +72,11 @@
       </tr>
     </table>
     <ul id="versionlist">
+      <li>Version 4.0.3 adds an option to not allocate any memory for styles.</li>
       <li>Version 4.0.2 fixes some bugs on macOS 10.13.</li>
       <li>Version 4.0.1 makes some changes to namespaces and headers. Scrolling is smoother on Cocoa.</li>
       <li>Version 4.0.0 is an unstable major release with changes to some internal and external interfaces.</li>
       <li>Version 3.7.6 was a minor long term release.</li>
-      <li>Version 3.7.5 adds a Reverse Selected Lines command.
-      MSVC 2013 is no longer supported.</li>
-      <li>Version 3.7.4 restores performance on GTK+.
-      C++11 now required to build and Windows NT 4 is no longer supported.</li>
     </ul>
     <ul id="menu">
       <li id="remote1"><a href="http://www.scintilla.org/SciTEImage.html">Screenshot</a></li>
diff --git a/scintilla/src/Position.h b/scintilla/src/Position.h
index 557655a5d..a8fbfb494 100644
--- a/scintilla/src/Position.h
+++ b/scintilla/src/Position.h
@@ -19,11 +19,6 @@ namespace Sci {
 typedef int Position;
 typedef int Line;
 
-// A later version (4.x) of this file may:
-//#if defined(SCI_LARGE_FILE_SUPPORT)
-//typedef std::ptrdiff_t Position;
-// or may allow runtime choice between different position sizes.
-
 const Position invalidPosition = -1;
 
 }
diff --git a/scintilla/version.txt b/scintilla/version.txt
index 52f22458d..e1a29c1fe 100644
--- a/scintilla/version.txt
+++ b/scintilla/version.txt
@@ -1 +1 @@
-402
+403