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  This sets the encoding to use for reading source files.
  This is to be used <b>if</b> the encoding of the source files
  is different from the system default encoding. For example
  on windows the default encoding may be windows code page 1252,
  and this may be different from the encoding in the source file,
  for example UTF-8.
  <br />
  The default is the system encoding.
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