Return a function which reads in a Microsoft Word document extracting its text.
readDOC(engine = c("antiword", "executable"), AntiwordOptions = "")a character string for the preferred DOC extraction engine (see Details).
Options passed over to antiword executable.
A function with the following formals:
elema list with the named component uri which must
      hold a valid file name.
languagea string giving the language.
idNot used.
The function returns a PlainTextDocument representing the text
  and metadata extracted from elem$uri.
Formally this function is a function generator, i.e., it returns a
  function (which reads in a text document) with a well-defined
  signature, but can access passed over arguments (e.g., options to
  antiword) via lexical scoping.
Available DOC extraction engines are as follows.
"antiword"(default) Antiword utility as provided by the
      function antiword in package antiword.
"executable"command line antiword executable which
      must be installed and accessible on your system. This can convert
      documents from Microsoft Word version 2, 6, 7, 97, 2000, 2002 and 2003 to
      plain text, and is available from http://www.winfield.demon.nl/. The
      character vector AntiwordOptions is passed over to the executable.
Reader for basic information on the reader infrastructure
  employed by package tm.