Ada Programming/Libraries/Ada.Wide Wide Text IO.Text Streams

is a unit of the Predefined Language Environment since Ada 2005.

Specification
Stream_Access   StreamsRoot_Stream_Type Stream File  File_Type  Stream_Access AdaWide_Wide_Text_IOText_Streams

Wikibook

 * Ada Programming/Libraries/Ada
 * Ada Programming/Libraries/Ada.Streams
 * Ada Programming/Input Output