+doc #19429 initial merge of docs-dev and docs

akka-docs/rst/scala/http/routing-dsl/directives/parameter-directives/parameter.rst

@@ -0,0 +1,24 @@
+.. _-parameter-:
+
+parameter
+=========
+
+Signature
+---------
+
+.. includecode2:: /../../akka-http/src/main/scala/akka/http/scaladsl/server/directives/ParameterDirectives.scala
+   :snippet: parameter
+
+Description
+-----------
+Extracts a *query* parameter value from the request.
+
+See :ref:`-parameters-` for a detailed description of this directive.
+
+See :ref:`which-parameter-directive` to understand when to use which directive.
+
+Example
+-------
+
+.. includecode2:: ../../../../code/docs/http/scaladsl/server/directives/ParameterDirectivesExamplesSpec.scala
+   :snippet: example-1