diff --git a/tutorials/working_with_editor.md b/tutorials/working_with_editor.md
index 0b288bcff..548bddd25 100644
--- a/tutorials/working_with_editor.md
+++ b/tutorials/working_with_editor.md
@@ -63,6 +63,9 @@ See also
 [CommonDataKeys.java] (https://github.com/JetBrains/intellij-community/blob/master/platform/editor-ui-api/src/com/intellij/openapi/actionSystem/CommonDataKeys.java),
 [DataKey.java] (https://github.com/JetBrains/intellij-community/blob/master/platform/editor-ui-api/src/com/intellij/openapi/actionSystem/DataKey.java)
 
+**TODO**
+Link to architectural overview and threading issues
+