HTML-XML-utils provides a number of simple utilities for manipulating and
 converting HTML and XML files in various ways. The suite consists of the
 following tools:
 .
  asc2xml - convert from UTF-8 to &#nnn; entities
  xml2asc - convert from &#nnn; entities to UTF-8
  hxaddid - add IDs to selected elements
  hxcite - replace bibliographic references by hyperlinks
  hxcite-mkbib - expand references and create bibliography
  hxclean - apply heuristics to correct an HTML file
  hxcopy - copy an HTML file while preserving relative links
  hxcount - count elements and attributes in HTML or XML files
  hxextract - extract selected elements
  hxincl - expand included HTML or XML files
  hxindex - create an alphabetically sorted index
  hxmkbib - create bibliography from a template
  hxmultitoc - create a table of contents for a set of HTML files
  hxname2id - move some ID= or NAME= from A elements to their parents
  hxnormalize - pretty-print an HTML file
  hxnsxml - convert output of hxxmlns back to normal XML
  hxnum - number section headings in an HTML file
  hxpipe - convert XML to a format easier to parse with Perl or AWK
  hxprintlinks - number links & add table of URLs at end of an HTML file
  hxprune - remove marked elements from an HTML file
  hxref - generate cross-references
  hxselect - extract elements that match a (CSS) selector
  hxtoc - insert a table of contents in an HTML file
  hxuncdata - replace CDATA sections by character entities
  hxunent - replace HTML predefined character entities to UTF-8
  hxunpipe - convert output of pipe back to XML format
  hxunxmlns - replace "global names" by XML Namespace prefixes
  hxwls - list links in an HTML file
  hxxmlns - replace XML Namespace prefixes by "global names"