sig
val write_document :
Pervasives.out_channel ->
('a Pxp_document.node #Pxp_document.extension as 'a)
Pxp_document.document -> unit
val write_subtree :
Pervasives.out_channel ->
('a Pxp_document.node #Pxp_document.extension as 'a) Pxp_document.node ->
unit
end
