A module that is a first class data oBject of the programming language, e.g. a record containing functions. In a functional language, it is standard to have first class programs, so program Building Blocks can have the same status. {Claus Reinke' s Virtual Bookshelf (http://www.informatik.uni-kiel.de/~cr/BiB/Bookshelf/Modules.html)}. (2004-01-26)