diff --git a/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleFileTypeFactory.java b/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleFileTypeFactory.java
index 39f907a7c..9ddff317c 100644
--- a/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleFileTypeFactory.java
+++ b/simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleFileTypeFactory.java
@@ -7,8 +7,10 @@ import com.intellij.openapi.fileTypes.FileTypeFactory;
 import org.jetbrains.annotations.NotNull;
 
 /**
- * Note: This class is only used with the fileTypeFactory extension point
+ * TODO: This class is only used with the {@code com.intellij.fileTypeFactory} extension point
  * for versions of the IntelliJ Platform prior to v2019.2.
+ *
+ * @see <a href="https://plugins.jetbrains.com/docs/intellij/language-and-filetype.html#register-the-filetype">Custom Language Tutorial</a>
  */
 @SuppressWarnings("deprecation")
 public class SimpleFileTypeFactory extends FileTypeFactory {
diff --git a/simple_language_plugin/src/main/resources/META-INF/plugin.xml b/simple_language_plugin/src/main/resources/META-INF/plugin.xml
index 174c97ca1..674507e99 100644
--- a/simple_language_plugin/src/main/resources/META-INF/plugin.xml
+++ b/simple_language_plugin/src/main/resources/META-INF/plugin.xml
@@ -42,6 +42,8 @@
     <!--
       Only required for versions of the IntelliJ Platform prior to v2019.2.
       Use 'com.intellij.fileTypeFactory' extension point INSTEAD of above 'com.intellij.fileType'.
+      See https://plugins.jetbrains.com/docs/intellij/language-and-filetype.html#register-the-filetype for details.
+
       <fileTypeFactory implementation="org.intellij.sdk.language.SimpleFileTypeFactory"/>
     -->
     <lang.parserDefinition language="Simple" implementationClass="org.intellij.sdk.language.SimpleParserDefinition"/>