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@_REQUIRE VARIABLE
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  -----------
  DESCRIPTION
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    As of PTM 0.5.0 Beta this variable's functional use has become obsolete. It
    has remained a part of the language, however, for legacy purposes.

    --------------------
    Pre-0.5.0 Beta Notes
    --------------------
    
    DO NOT MODIFY THIS VARIABLE

    @_REQUIRE, though being a publicly accessible variable, should NEVER be
    modified at run-time. @_REQUIRE is filled using PTM's REQUIRE tag, and
    stores the names of Perl modules to be loaded into your project. The only
    acceptable method of modifying this variable is through the use of PTM's
    REQUIRE tag. It's one applicable use within your PTM scripts may be to
    display the list of PTM included modules, but even that use is a rarity.

    ---------------------
    Post-0.5.0 Beta Notes
    ---------------------

    Though functionally obsolete for internal use, this variable has been kept
    for legacy purposes. No longer used internally, this variable can still be
    used to reference which PTM modules were loaded via REQUIRE tags.

  --------
  SEE ALSO
  --------

    TAGS

      REQUIRE

    VARIABLES

      @_PTM, $_PTM_POS, $_PTM_PREPROCESS

    FUNCTIONS

      _PTM(), _PTM_FILE()