Require Export Xml. Require List. Require ListSet. Require PolyList. (*Require PolyListSyntax.*) Require Streams. Require TheoryList. Print XML Module Disk "examples" List. Print XML Module Disk "examples" ListSet. Print XML Module Disk "examples" PolyList. (*Print XML Module Disk "examples" PolyListSyntax.*) Print XML Module Disk "examples" Streams. Print XML Module Disk "examples" TheoryList.