diff --git a/README.md b/README.md
index 06bfaeb..97cfceb 100644
--- a/README.md
+++ b/README.md
@@ -1,26 +1,37 @@
-# yapafo - Yet Another Php Api For Ospenstreetmap
+# Yet Another Php Api For OpenStreetMap
 
-This library permits to read and write objects in the OpenStreetMap database.
+**yapafo** is a library which permits to authenticate, read and write objects in the OpenStreetMap database.
 
-## FEATURES
+## FEATURES
 
-- Read objects from API and Overpass-API.
+- Read objects from API, XAPI and Overpass-API.
 - Write objects to API.
 - Authenticate with Basic or OAuth.
-- The class instance and its osm objects is serializable.
-- A bit of geometry stuff (id node inside/outside polygon)
+- The class instance and its osm objects are serializable.
+- A bit of geometry stuff (is node inside/outside polygon)
 - ...
 
 ## REQUIREMENTS
 
+Requirements are covered in `composer.json`.
+
 Php extensions:
+
 - [SimpleXml](https://www.php.net/manual/en/book.simplexml.php)
 
+Php libraries:
+
+- [psr/log](https://github.com/php-fig/log)
+- [vlucas/phpdotenv](https://github.com/vlucas/phpdotenv)
+
 ## TUTORIALS / EXAMPLES
 
-- look at tests/test_OSM_Api_with-network-write.php to see how to Read data, Authenticate and Save changes.
+- A web page to create OAuth Access Token
+  - launch a browser at  `examples-web/OAuthRequestAccess.php`
+  - like with `php -S localhost:8000` 
+- Other command-line examples in `examples-console`
 
-### examples-web
+### examples-web
 
 - the tool examples/OAuthRequestAccess.php is an easy way to get OAuth Access Token (and understand the protocol phases ;-)
 - Overpass-API requests are shown in examples/OApiQuery.php and ApiOApiQuery.php
@@ -33,6 +44,5 @@ Php extensions:
 
 - The OAuth 1.0 Protocol : http://tools.ietf.org/html/rfc5849
 - OSM OAuth doc : http://wiki.openstreetmap.org/wiki/OAuth
-
 - [PSR-3: Logger Interface](https://www.php-fig.org/psr/psr-3/)
-- [PSR-11: Container interface](https://www.php-fig.org/psr/psr-11/)
+