IBX-7013: Focus mode description added in Page Builder and Online Editor product guide (#2219)

* Focus mode added in Page Builder product guide

* Updates

Author: julitafalcondusza

docs/content_management/img/access_focus_mode_PB.png

@@ -149,6 +149,14 @@ Available settings are:
 - Refresh - refreshes preview of the block
 - Delete - deletes existing block
 
+#### Focus mode
+
+While configuring blocks that include Rich Text section, for example, Text block, you can switch to focus mode that expands the workspace to full screen.
+
+![Focus mode](focus_mode.png)
+
+For more information, see [Focus mode]([[= user_doc =]]/content_management/create_edit_content_items/#focus-mode/).
+
 #### Schedule content
 
 Page Builder comes with a Scheduler, it allows you to schedule content appearance.

docs/content_management/img/exit_focus_mode.png

@@ -34,6 +34,14 @@ It also allows embedding other content from the Repository, as well as from Face
 All links added to a RichText Field by using the link element are listed
 and can be managed in the [Link manager](url_management.md).
 
+#### Focus mode
+
+While editing Rich Text Fields, you can switch to focus mode that expands the workspace to full screen.
+
+![Focus mode](focus_mode.png)
+
+For more information, see [Focus mode]([[= user_doc =]]/content_management/create_edit_content_items/#focus-mode/).
+
 ### Custom tags
 
 Custom tags are customizable RichText elements for which you can specify attributes