diff --git a/_exts/phpcr/sphinx/cnd.py b/_exts/phpcr/sphinx/cnd.py
new file mode 100644
index 0000000..dc04166
--- /dev/null
+++ b/_exts/phpcr/sphinx/cnd.py
@@ -0,0 +1,4 @@
+from phpcr.sphinx.lexer_cnd import CndLexer
+
+def setup(app):
+    app.add_lexer('cnd', CndLexer())
diff --git a/_exts/phpcr/sphinx/lexer_cnd.py b/_exts/phpcr/sphinx/lexer_cnd.py
new file mode 100644
index 0000000..1cd1632
--- /dev/null
+++ b/_exts/phpcr/sphinx/lexer_cnd.py
@@ -0,0 +1,40 @@
+from pygments.lexer import RegexLexer
+from pygments.token import *
+import re
+
+class CndLexer(RegexLexer):
+    """
+    For JCR Compact Namespace and Node Type Definition files.
+    """
+
+    name = 'Cnd'
+    aliases = ['cnd']
+    filenames = ['*.cnd']
+
+    tokens = {
+        'root': [
+            (r'^<.*?>', Name.Namespace),
+            (r'^//.*$', Comment),
+            (r'/\*\*/', Comment.Multiline),
+            (r'/\*.*?\*/', Comment.Multiline),
+            (r'\[.*?\]', Name.Entity, 'nodetype'),
+            (r'\((string|binary|long|double|date|boolean|name|path|reference|weakreference|uri|decimal)\)', Name.Label),
+            (r'(\[|\(|\)|\])', Name.Tag),
+            (r'^\+', Keyword.Declaration),
+            (r'^\-', Keyword.Declaration),
+            (r'(mandatory|autocreated|protected|version|primary)', Keyword),
+            (r'(mixin|orderable)', Keyword),
+            (r'(mandatory|autocreated|protected|multiple|version|primary)', Keyword),
+            (r'(>|=|<|\*)', Operator),
+            (r'\'.*?\'', String.Single),
+            (r',', Punctuation),
+            (r'\s+', Text),
+            (r'[\w:]', Text),
+        ],
+        'nodetype': [
+            (r'>', Name.Punctuation),
+            (r'[\w:]', Name.Class),
+            (r',', Punctuation),
+            (r' ', Text),
+        ]
+    }
diff --git a/conf.py b/conf.py
index 3c386f6..061df32 100644
--- a/conf.py
+++ b/conf.py
@@ -23,9 +23,13 @@
 # If your documentation needs a minimal Sphinx version, state it here.
 #needs_sphinx = '1.0'
 
+
+# Add ourxextension directory to the system paths
+sys.path.append(os.path.abspath('_exts'))
+
 # Add any Sphinx extension module names here, as strings. They can be extensions
 # coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
-extensions = []
+extensions = ['phpcr.sphinx.cnd']
 
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ['_templates']