TODO LIST
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- New type for content items: TSV table, which gets converted to a HTML table
  on reading. e.g. "foo,bar,baz" => "<td>foo</td><td>bar</td><td>baz</td>"
  Do a <csvtable> tag instead for use in EtText.

- Provide a decent shortcut to create <A HREF=foo TITLE=foo> link titles from
  EtText.