Module XHTML

module XHTML: sig .. end
Typesafe constructors for XHTML 1.1 documents.
See also W3C Recommendation

module type T = sig .. end
module type T_01_01 = T
An alias for XHTML 1.1 (for symmetry):
module type T_01_00 = sig .. end
XHTML 1.0 includes some deprecated features that since have been removed from XHTML 1.1:
module M: T 
module M_01_01: T_01_01 
module M_01_00: T_01_00