ENGCOM-9328: Update Cms Module README Content #34442

Author: sidolov

app/code/Magento/Cms/README.md

@@ -2,12 +2,45 @@
 
 The CMS module provides the create, edit, and manage functionality on pages for different content types.
 
-## UI components
-
 ### Wysiwyg
 
 The Wysiwyg UI component is a customizable and configurable TinyMCE editor.
 
 The default implementation has the following customizations:
 
 * Magento Media Library support
+
+### Layouts
+
+The module interacts with the following layout handles:
+
+`view/base/layout` directory:
+The module interacts with the following layout handles:
+
+`view/adminhtml/layout` directory:
+ - `cms_block_edit.xml`
+ - `cms_block_index.xml`
+ - `cms_block_new.xml`
+ - `cms_page_edit.xml`
+ - `cms_page_index.xml`
+ - `cms_page_new.xml`
+ - `cms_wysiwyg_images_contents.xml`
+ - `cms_wysiwyg_images_index.xml`
+
+The module interacts with the following layout handles in the `view/frontend/layout` directory:
+ - `cms_index_defaultindex.xml`
+ - `cms_index_defaultnoroute.xml`
+ - `cms_index_index.xml`
+ - `cms_index_nocookies.xml`
+ - `cms_noroute_index.xml`
+ - `cms_page_view.xml`
+ - `default.xml`
+ - `print.xml`
+
+### UI components
+This module extends following ui components located in the `view/base/ui_component` directory:
+This module extends following ui components located in the `view/adminhtml/ui_component` directory:
+ - `cms_block_form.xml`
+ - `cms_block_listing.xml`
+ - `cms_page_form.xml`
+ - `cms_page_listing.xml`