diff --git a/abl.tmLanguage b/abl.tmLanguage
index 4df162b..9081c4a 100644
--- a/abl.tmLanguage
+++ b/abl.tmLanguage
@@ -7,6 +7,7 @@
         <string>p</string>
         <string>w</string>
         <string>i</string>
+        <string>cls</string>
     </array>
     <key>name</key>
     <string>OpenEdge ABL</string>
@@ -121,4 +122,4 @@
     <key>uuid</key>
     <string>075bb86e-03ea-4fea-bac0-e11b9dc73e03</string>
 </dict>
-</plist>
\ No newline at end of file
+</plist>