# File lib_doc/rucy/sample.rb, line 90
    def self.filter_args
      [ [ 'string',  :string, 'hi' ],
        [ 'password', :password, nil ],
        [ 'text',    :text,   '<html>Hello world.</html>' ],
        [ 'number',  :number, 0 ],
        [ 'regexp',  :regexp, /foo/ ],
        [ 'boolean', :bool,   true ],
        [ 'select',  :select, %[ foo bar baz ] ],
        [ 'radio',   :radio,  %[ foo bar baz ] ],
        [ 'checkset', :checkset,
          [ [ 'foo', true  ],
            [ 'bar', false ],
            [ 'baz', false ]
          ]
        ],
      ]
    end