diff --git a/docs/html/md__grammar.html b/docs/html/md__grammar.html
index 33d6b8c1540..7431c6dcf8c 100644
--- a/docs/html/md__grammar.html
+++ b/docs/html/md__grammar.html
@@ -5,7 +5,7 @@
 <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
 <meta http-equiv="X-UA-Compatible" content="IE=9"/>
 <meta name="generator" content="Doxygen 1.8.7"/>
-<title>FlatBuffers: Formal Grammar of the schema language</title>
+<title>FlatBuffers: Grammar of the schema language</title>
 <link href="tabs.css" rel="stylesheet" type="text/css"/>
 <script type="text/javascript" src="jquery.js"></script>
 <script type="text/javascript" src="dynsections.js"></script>
@@ -55,7 +55,7 @@
 <div id="doc-content">
 <div class="header">
   <div class="headertitle">
-<div class="title">Formal Grammar of the schema language </div>  </div>
+<div class="title">Grammar of the schema language </div>  </div>
 </div><!--header-->
 <div class="contents">
 <div class="textblock"><p>schema = include* ( namespace_decl | type_decl | enum_decl | root_decl | file_extension_decl | file_identifier_decl | attribute_decl | object )*</p>
@@ -68,13 +68,16 @@
 <p>field_decl = ident <code>:</code> type [ <code>=</code> scalar ] metadata <code>;</code></p>
 <p>type = <code>bool</code> | <code>byte</code> | <code>ubyte</code> | <code>short</code> | <code>ushort</code> | <code>int</code> | <code>uint</code> | <code>float</code> | <code>long</code> | <code>ulong</code> | <code>double</code> | <code>string</code> | <code>[</code> type <code>]</code> | ident</p>
 <p>enumval_decl = ident [ <code>=</code> integer_constant ]</p>
-<p>metadata = [ <code>(</code> commasep( ident [ <code>:</code> scalar ] ) <code>)</code> ]</p>
-<p>scalar = integer_constant | float_constant | <code>true</code> | <code>false</code></p>
+<p>metadata = [ <code>(</code> commasep( ident [ <code>:</code> single_value ] ) <code>)</code> ]</p>
+<p>scalar = integer_constant | float_constant</p>
 <p>object = { commasep( ident <code>:</code> value ) }</p>
-<p>value = scalar | object | string_constant | <code>[</code> commasep( value ) <code>]</code></p>
+<p>single_value = scalar | string_constant</p>
+<p>value = single_value | object | <code>[</code> commasep( value ) <code>]</code></p>
 <p>commasep(x) = [ x ( <code>,</code> x )* ]</p>
 <p>file_extension_decl = <code>file_extension</code> string_constant <code>;</code></p>
-<p>file_identifier_decl = <code>file_identifier</code> string_constant <code>;</code> </p>
+<p>file_identifier_decl = <code>file_identifier</code> string_constant <code>;</code></p>
+<p>integer_constant = -?[0-9]+ | <code>true</code> | <code>false</code></p>
+<p>float_constant = -?[0-9]+.[0-9]+((e|E)(+|-)?[0-9]+)? </p>
 </div></div><!-- contents -->
 </div><!-- doc-content -->
 <!-- Google Analytics -->
diff --git a/docs/html/navtree.js b/docs/html/navtree.js
index 58cf1e6c586..58fba48aba6 100644
--- a/docs/html/navtree.js
+++ b/docs/html/navtree.js
@@ -11,7 +11,7 @@ var NAVTREE =
     [ "Benchmarks", "md__benchmarks.html", null ],
     [ "FlatBuffers white paper", "md__white_paper.html", null ],
     [ "FlatBuffer Internals", "md__internals.html", null ],
-    [ "Formal Grammar of the schema language", "md__grammar.html", null ]
+    [ "Grammar of the schema language", "md__grammar.html", null ]
   ] ]
 ];
 
diff --git a/docs/html/pages.html b/docs/html/pages.html
index 69d49a3b8ab..cbbe8464fd8 100644
--- a/docs/html/pages.html
+++ b/docs/html/pages.html
@@ -70,7 +70,7 @@
 <tr id="row_7_"><td class="entry"><span style="width:16px;display:inline-block;">&#160;</span><a class="el" href="md__benchmarks.html" target="_self">Benchmarks</a></td><td class="desc"></td></tr>
 <tr id="row_8_" class="even"><td class="entry"><span style="width:16px;display:inline-block;">&#160;</span><a class="el" href="md__white_paper.html" target="_self">FlatBuffers white paper</a></td><td class="desc"></td></tr>
 <tr id="row_9_"><td class="entry"><span style="width:16px;display:inline-block;">&#160;</span><a class="el" href="md__internals.html" target="_self">FlatBuffer Internals</a></td><td class="desc"></td></tr>
-<tr id="row_10_" class="even"><td class="entry"><span style="width:16px;display:inline-block;">&#160;</span><a class="el" href="md__grammar.html" target="_self">Formal Grammar of the schema language</a></td><td class="desc"></td></tr>
+<tr id="row_10_" class="even"><td class="entry"><span style="width:16px;display:inline-block;">&#160;</span><a class="el" href="md__grammar.html" target="_self">Grammar of the schema language</a></td><td class="desc"></td></tr>
 </table>
 </div><!-- directory -->
 </div><!-- contents -->
diff --git a/docs/source/Grammar.md b/docs/source/Grammar.md
index cafc05487c7..bcc5f7496f6 100755
--- a/docs/source/Grammar.md
+++ b/docs/source/Grammar.md
@@ -1,4 +1,4 @@
-# Formal Grammar of the schema language
+# Grammar of the schema language
 
 schema = include*
          ( namespace\_decl | type\_decl | enum\_decl | root\_decl |
@@ -26,13 +26,15 @@ type = `bool` | `byte` | `ubyte` | `short` | `ushort` | `int` | `uint` |
 
 enumval\_decl = ident [ `=` integer\_constant ]
 
-metadata = [ `(` commasep( ident [ `:` scalar ] ) `)` ]
+metadata = [ `(` commasep( ident [ `:` single\_value ] ) `)` ]
 
-scalar = integer\_constant | float\_constant | `true` | `false`
+scalar = integer\_constant | float\_constant
 
 object = { commasep( ident `:` value ) }
 
-value = scalar | object | string\_constant | `[` commasep( value ) `]`
+single\_value = scalar | string\_constant
+
+value = single\_value | object | `[` commasep( value ) `]`
 
 commasep(x) = [ x ( `,` x )\* ]
 
@@ -40,3 +42,6 @@ file_extension_decl = `file_extension` string\_constant `;`
 
 file_identifier_decl = `file_identifier` string\_constant `;`
 
+integer\_constant = -?[0-9]+ | `true` | `false`
+
+float\_constant = -?[0-9]+.[0-9]+((e|E)(+|-)?[0-9]+)?