DOM examples

features.f90 : Illustrates the types of nodes created for
               the different parsing events.

data.f90     : Dynamics of the DOM tree: cloning, inserting,
               destroying, and dumping to XML.

text.f90     : Example of the "normalize" method.

pseudo.f90   : Real-world example of parsing a pseudopotential file.

pseudo_dom.f90 : A more sophisticated, more DOM-like version of
                 pseudo processing (incomplete picture -- more
                 routines need to be written).