Add new extension to reformat a (text) paragraph.
diff --git a/Tools/idle/extend.py b/Tools/idle/extend.py
index 7d8117d..58bc95f 100644
--- a/Tools/idle/extend.py
+++ b/Tools/idle/extend.py
@@ -5,5 +5,6 @@
     "SearchBinding",
     "AutoIndent",
     "AutoExpand",
+    "FormatParagraph",
     "ZoomHeight",
 ]