update read me file for Variable, vault, vaultGraphQl, version, webApi modules

app/code/Magento/Variable/README.md

@@ -1 +1,39 @@
-Magento\Variable Allows to create custom variables and then use them in email templates or in WYSIWYG editor for editing description of system entities.
+# Magento_Variable module
+
+The **Magento_Variable** module allows creating custom variables and then use them in email templates or in WYSIWYG editor for editing description of system entities.
+
+## Installation details
+
+Before installing this module, note that the **Magento_Variable** is dependent on the following modules:
+
+- Magento_Config
+- Magento_Store
+
+Before disabling or uninstalling this module, please consider the following dependencies:
+
+- Magento_Cms
+- Magento_Email
+
+Please find here [how to enable or disable modules in Magento 2](https://devdocs.magento.com/guides/v2.4/install-gde/install/cli/install-cli-subcommands-enable.html).
+
+### Layouts
+
+This module introduces the following layouts and layout handles in the directories:
+
+- `view/adminhtml/layout`:
+    - `adminhtml_system_variable_edit`
+    - `adminhtml_system_variable_grid_block`
+    - `adminhtml_system_variable_index`
+
+For more information about a layout in Magento 2, see the [Layout documentation](https://devdocs.magento.com/guides/v2.4/frontend-dev-guide/layouts/layout-overview.html).
+
+### UI components
+
+You can extend a customer form and widgets using the configuration files located in the directories
+
+- `view/adminhtml/ui_component`:
+    - `variables_modal`
+
+For information about a UI component in Magento 2, see [Overview of UI components](https://devdocs.magento.com/guides/v2.4/ui_comp_guide/bk-ui_comps.html).
+
+

app/code/Magento/Vault/README.md

@@ -1 +1,59 @@
-The Magento_Vault module implements the integration with the Vault payment gateway and makes the latter available as a payment method in Magento.
+# Magento_Vault module
+
+The **Magento_Vault** module implements the integration with the Vault payment gateway and makes the latter available as a payment method in Magento.
+
+## Installation details
+
+Before installing this module, note that the **Magento_Vault** is dependent on the following modules:
+
+- Magento_Checkout
+- Magento_Customer
+- Magento_Payment
+- Magento_Quote
+- Magento_Sales
+- Magento_Store
+- Magento_Theme
+
+Before disabling or uninstalling this module, please consider the following dependencies:
+
+- Magento_Paypal
+
+Please find here [how to enable or disable modules in Magento 2](https://devdocs.magento.com/guides/v2.4/install-gde/install/cli/install-cli-subcommands-enable.html).
+
+## Extensibility
+
+Extension developers can interact with the Magento_Vault module. For more information about the Magento extension mechanism, see [Magento plug-ins](https://devdocs.magento.com/guides/v2.4/extension-dev-guide/plugins.html).
+
+[The Magento dependency injection mechanism](https://devdocs.magento.com/guides/v2.4/extension-dev-guide/depend-inj.html) enables you to override the functionality of the Magento_Vault module.
+
+### Events
+
+The module dispatches the following events:
+
+- `payment_method_assign_data_vault` event in the `\Magento\Vault\Model\Method\Vault::assignData()` method. Parameters:
+    - `method` is a method code (`\Magento\Vault\Model\Method\Vault` class).
+    - `payment_model` is a payment information model object (`\Magento\Payment\Model\InfoInterface` class).
+
+For information about the event system in Magento 2, see [Events and observers](https://devdocs.magento.com/guides/v2.4/extension-dev-guide/events-and-observers.html#events).
+
+### Layouts
+
+This module introduces the following layouts and layout handles in the directories:
+
+- `view/frantend/layout`:
+    - `checkout_index_index`
+    - `customer_account`
+    - `vault_cards_listaction`
+
+For more information about a layout in Magento 2, see the [Layout documentation](https://devdocs.magento.com/guides/v2.4/frontend-dev-guide/layouts/layout-overview.html).   
+
+### Public APIs
+
+`\Magento\Vault\Api\PaymentMethodListInterface`:
+
+    - Contains methods to retrieve vault payment methods.
+    - This interface is consistent with \Magento\Payment\Api\PaymentMethodListInterface
+
+[Learn detailed description of the Magento_Sales API.](https://devdocs.magento.com/guides/v2.4/mrg/ce/Sales/services.html)
+
+For information about a public API in Magento 2, see [Public interfaces & APIs](https://devdocs.magento.com/guides/v2.4/extension-dev-guide/api-concepts.html).

app/code/Magento/VaultGraphQl/README.md

@@ -1,5 +1,28 @@
-# VaultGraphQl
+# Magento_VaultGraphQl module
 
-**VaultGraphQl** provides type and resolver information for the GraphQl module
-to generate Vault (stored payment information) information endpoints. This module also
-provides mutations for modifying a payment token.
+The **Magento_VaultGraphQl** module extends **Magento_GraphQl** and **Magento_Vault** modules.
+
+The **Magento_VaultGraphQl** module provides type and resolver information for the GraphQl module to generate Vault (stored payment information) information endpoints.
+
+The **Magento_VaultGraphQl** module also provides mutations for modifying a payment token.
+
+## Installation details
+
+Before installing this module, note that the **Magento_VaultGraphQl** is dependent on the following modules:
+
+- Magento_Vault
+- Magento_GraphQl
+
+For information about enabling or disabling a module in Magento 2, see [Enable or disable modules](https://devdocs.magento.com/guides/v2.4/install-gde/install/cli/install-cli-subcommands-enable.html).
+
+## Additional information
+
+For more information about the **Magento_VaultGraphQl** [Queries](#queries) and [Mutations](#mutations) see below:
+
+### Queries {#queries}
+
+- [`customerPaymentTokens`](https://devdocs.magento.com/guides/v2.4/graphql/queries/customer-payment-tokens.html)
+
+### Mutations {#mutations}
+
+- [`deletePaymentToken`](https://devdocs.magento.com/guides/v2.4/graphql/mutations/delete-payment-token.html)

app/code/Magento/Version/README.md

@@ -1 +1,3 @@
-Magento\Version Allows to get Magento version and edition by HTTP GET request
+# Magento_Version module
+
+The **Magento_Version** module allows to get Magento version and edition by HTTP GET request.

app/code/Magento/Webapi/README.md

@@ -1,5 +1,30 @@
-# Webapi
+# Magento_Webapi module
 
-**Webapi** provides the framework for the application to expose REST and SOAP web services. It exposes an area for REST
-and another area for SOAP services and routes requests based on the Webapi configuration. It also handles
-deserialization of requests and serialization of responses. 
+The **Magento_Webapi** module provides the framework for the application to expose REST and SOAP web services. It exposes an area for REST and another area for SOAP services and routes requests based on the Webapi configuration.
+
+The **Magento_Webapi** module also handles deserialization of requests and serialization of responses.
+
+## Installation details
+
+Before installing this module, note that the **Magento_VaultGraphQl** is dependent on the following modules:
+
+- Magento_Authorization
+- Magento_Backend
+- Magento_Integration
+- Magento_Store
+
+Before disabling or uninstalling this module, please consider the following dependencies:
+
+- Magento_WebapiAsync
+
+For information about enabling or disabling a module in Magento 2, see [Enable or disable modules](https://devdocs.magento.com/guides/v2.4/install-gde/install/cli/install-cli-subcommands-enable.html).
+
+### Layouts
+
+This module introduces the following layouts and layout handles in the directories:
+
+- `view/adminhtml/layout`:
+    - `adminhtml_integration_edit`
+    - `adminhtml_integration_permissionsdialog`
+
+For more information about a layout in Magento 2, see the [Layout documentation](https://devdocs.magento.com/guides/v2.4/frontend-dev-guide/layouts/layout-overview.html).