I would say that it XmlReaderis a good choice if you need to process a large XML document without reading the entire document in memory (i.e. process streams). It is not particularly functional, but it is fine - when doing I / O in F # you do not need to write it functionally, because it is always difficult with I / O (not impossible, but F # users are simply inclined to use standard .NET libraries) .
, XML-, . XML , , XML .
(- XHTML), XDocument ( API, XmlDocument) F #).