diff --git a/platform/execution-impl/src/com/intellij/execution/lineMarker/RunLineMarkerContributor.java b/platform/execution-impl/src/com/intellij/execution/lineMarker/RunLineMarkerContributor.java
index 5aa6df7fa3d7..66b64c1b4643 100644
--- a/platform/execution-impl/src/com/intellij/execution/lineMarker/RunLineMarkerContributor.java
+++ b/platform/execution-impl/src/com/intellij/execution/lineMarker/RunLineMarkerContributor.java
@@ -1,4 +1,4 @@
-// Copyright 2000-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+// Copyright 2000-2023 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 package com.intellij.execution.lineMarker;
 
 import com.intellij.execution.ExecutionBundle;
@@ -20,11 +20,18 @@ import java.util.Arrays;
 import java.util.Objects;
 import java.util.function.Function;
 
+/**
+ * Allows adding an editor gutter icon associated with a PSI element that can be run
+ * (e.g., a test, a main method, an application, etc.).
+ */
 public abstract class RunLineMarkerContributor {
   public static final Function<PsiElement, String> RUN_TEST_TOOLTIP_PROVIDER = it -> ExecutionBundle.message("run.text");
 
   static final LanguageExtension<RunLineMarkerContributor> EXTENSION = new LanguageExtension<>("com.intellij.runLineMarkerContributor");
 
+  /**
+   * Creates test run line marker info with a given icon and available executor actions.
+   */
   @NotNull
   public static Info withExecutorActions(@NotNull Icon icon) {
     return new Info(icon, ExecutorAction.getActions(1), RUN_TEST_TOOLTIP_PROVIDER);
@@ -71,16 +78,24 @@ public abstract class RunLineMarkerContributor {
     }
   }
 
+  /**
+   * Returns information about gutter icon, its tooltip, and available run actions for a given PSI element.
+   */
   @Nullable
   public abstract Info getInfo(@NotNull PsiElement element);
 
+  /**
+   * Returns information about gutter icon, its tooltip, and available run actions for a given PSI element.
+   * Implement if creating the information is slow.
+   * @see com.intellij.codeInsight.daemon.LineMarkerProvider#collectSlowLineMarkers
+   */
   public Info getSlowInfo(@NotNull PsiElement element) {
     return null;
   }
 
   /**
    * @param file any file with a language this contributor is registered for
-   * @return whether there's no possibility that a {@link com.intellij.execution.actions.RunConfigurationProducer}'would
+   * @return whether there's no possibility that a {@link com.intellij.execution.actions.RunConfigurationProducer} would
    * return a configuration not returned by this contributor in this file. Used to speed up "Run..." context action update.
    */
   public boolean producesAllPossibleConfigurations(@NotNull PsiFile file) {