app/code/Magento/Widget/README.md
This module allows Magento application to be extended with custom widget blocks.
Before installing this module, note that this module is dependent on the following modules:
Before disabling or uninstalling this module, note the following dependencies:
Refer to how to enable or disable modules in Magento 2.
Extension developers can interact with this module. For more information about the extension mechanism, see Plugins.
The dependency injection mechanism enables you to override the functionality of this module.
This module introduces the following layouts and layout handles in the directories:
view/adminhtml/layout:
adminhtml_widget_indexadminhtml_widget_instance_blockadminhtml_widget_instance_editadminhtml_widget_instance_indexadminhtml_widget_loadoptionsview/frantend/layout:
defaultprintFor more information about a layout, see the Layout documentation.