functions include in a pakcage 
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> help(package="XML")

starting httpd help server ... done

   http://127.0.0.1:17234/library/XML/html/00Index.html

 Tools for Parsing and Generating XML Within R and S-Plus [R logo]

Documentation for package 'XM' version 3.98-1.6

                   DESCRIPTION file.

     Help Pages
                                  A C D E F G H I L M N O P R S T U X misc
-- A --
addAttributes             Add child nodes to an XML node
addAttributes-method      Add child nodes to an XML node
addChildren               Add child nodes to an XML node
addChildren-method        Add child nodes to an XML node
addNode                   Add a node to a tree
addNode.XMLHashTree       Add a node to a tree
addSibling                Manipulate sibling XML nodes
append.XMLNode            Add children to an XML node
append.xmlNode            Add children to an XML node
asXMLNode                 Converts non-XML node objects to XMLTextNode objects
asXMLTreeNode             Convert a regular XML node to one for use in a "flat" tree

-- C --
catalogAdd               Manipulate XML catalog contents
catalogClearTable        Manipulate XML catalog contents
catalogDump              Manipulate XML catalog contents
catalogLoad              Manipulate XML catalog contents
catalogResolve           Look up an element via the XML catalog mechanism
coerce-method            Constructor for DTD reference
coerce-method            Simple classes for identifying an XML document containing R code
coerce-method            Class to represent reference to C-level data structure for an XML document
coerce-method            Classes to describe an XML node object.
coerce-method            Converts non-XML node objects to XMLTextNode objects
coerce-method            Transform between XML representations
coerce-method            Create internal XML node or document object
coerce-method            Parse a URI string into its elements
coerce-method            Read data from one or more HTML tables
coerce-method            Output internal XML Tree
coerce-method            Classes for working with XML Schema
coerce-method            Get definitions of any namespaces defined in this XML node
coerce-method            Find a namespace definition object by searching ancestor nodes
coerce-method            Extract or set the contents of a leaf XML node
comment.SAX              Generic Methods for SAX callbacks
comment.SAX-method       Generic Methods for SAX callbacks
COMPACT                  Parse an XML document with options controlling the parser.
compareXMLDocs           Indicate differences between two XML documents


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