diff --git a/core/modules/update/templates/update-report.html.twig b/core/modules/update/templates/update-report.html.twig
index f5f7d57..ce8a508 100644
--- a/core/modules/update/templates/update-report.html.twig
+++ b/core/modules/update/templates/update-report.html.twig
@@ -4,26 +4,27 @@
  * Default theme implementation for the project status report.
  *
  * Available variables:
- * - update_last_check: The last date/time update command ran.
+ * - update_last_check: The last date/time the system checked for updates
+      for the installed projects.
  * - project_types: A list of product types.
- *   - label: Project type label.
+ *   - label: The product type label.
  *   - projects: Data about each project's status.
  *     - title: The project tile.
  *     - attributes: HTML attributes for the product row.
  *     - status_label: The project status label.
- *     - reason: @todo.
+ *     - reason: The reason you should update the project.
  *     - icon: The project status version indicator icon.
- *     - existing_version: @todo.
- *     - versions: @todo.
- *     - install_type: @todo.
- *     - datestamp: @todo.
- *     - extra: @todo.
- *       - attributes: HTML attributes for the extra items.
- *       - label: @todo.
- *       - data: @todo.
- *     - includes: @todo.
- *     - base_themes: @todo.
- *     - sub_themes: @todo.
+ *     - existing_version: The version of the installed project.
+ *     - versions: The available versions of the project.
+ *     - install_type: The type of project (i.e. dev).
+ *     - datestamp: The date/time of a project versions release.
+ *     - extra: HTML attributes and additional information about the project.
+ *       - attributes: HTML attributes for the extra item.
+ *       - label: The label for an extra item.
+ *       - data: The data about an extra item.
+ *     - includes: The projects within project.
+ *     - base_themes: The base theme declared for the project.
+ *     - sub_themes: The sub themes declared for the project.
  *
  * @see template_preprocess()
  * @see template_preprocess_update_report()