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HTML is good for debugging, but probably is not suitable for your application.
See complete documentation, or API help for more information.
array (
  'query' => 
  array (
    'namespaces' => 
    array (
      18446744073709551614 => 
      array (
        'id' => -2,
        'case' => 'first-letter',
        '*' => 'Media',
        'canonical' => 'Media',
      ),
      18446744073709551615 => 
      array (
        'id' => -1,
        'case' => 'first-letter',
        '*' => 'Special',
        'canonical' => 'Special',
      ),
      0 => 
      array (
        'id' => 0,
        'case' => 'first-letter',
        '*' => '',
        'content' => '',
      ),
      1 => 
      array (
        'id' => 1,
        'case' => 'first-letter',
        '*' => 'Talk',
        'subpages' => '',
        'canonical' => 'Talk',
      ),
      2 => 
      array (
        'id' => 2,
        'case' => 'first-letter',
        '*' => 'User',
        'subpages' => '',
        'canonical' => 'User',
      ),
      3 => 
      array (
        'id' => 3,
        'case' => 'first-letter',
        '*' => 'User talk',
        'subpages' => '',
        'canonical' => 'User talk',
      ),
      4 => 
      array (
        'id' => 4,
        'case' => 'first-letter',
        '*' => 'RationalWiki',
        'subpages' => '',
        'canonical' => 'Project',
      ),
      5 => 
      array (
        'id' => 5,
        'case' => 'first-letter',
        '*' => 'RationalWiki talk',
        'subpages' => '',
        'canonical' => 'Project talk',
      ),
      6 => 
      array (
        'id' => 6,
        'case' => 'first-letter',
        '*' => 'File',
        'canonical' => 'File',
      ),
      7 => 
      array (
        'id' => 7,
        'case' => 'first-letter',
        '*' => 'File talk',
        'subpages' => '',
        'canonical' => 'File talk',
      ),
      8 => 
      array (
        'id' => 8,
        'case' => 'first-letter',
        '*' => 'MediaWiki',
        'canonical' => 'MediaWiki',
      ),
      9 => 
      array (
        'id' => 9,
        'case' => 'first-letter',
        '*' => 'MediaWiki talk',
        'canonical' => 'MediaWiki talk',
      ),
      10 => 
      array (
        'id' => 10,
        'case' => 'first-letter',
        '*' => 'Template',
        'subpages' => '',
        'canonical' => 'Template',
      ),
      11 => 
      array (
        'id' => 11,
        'case' => 'first-letter',
        '*' => 'Template talk',
        'subpages' => '',
        'canonical' => 'Template talk',
      ),
      12 => 
      array (
        'id' => 12,
        'case' => 'first-letter',
        '*' => 'Help',
        'subpages' => '',
        'canonical' => 'Help',
      ),
      13 => 
      array (
        'id' => 13,
        'case' => 'first-letter',
        '*' => 'Help talk',
        'subpages' => '',
        'canonical' => 'Help talk',
      ),
      14 => 
      array (
        'id' => 14,
        'case' => 'first-letter',
        '*' => 'Category',
        'canonical' => 'Category',
      ),
      15 => 
      array (
        'id' => 15,
        'case' => 'first-letter',
        '*' => 'Category talk',
        'subpages' => '',
        'canonical' => 'Category talk',
      ),
      90 => 
      array (
        'id' => 90,
        'case' => 'first-letter',
        '*' => 'Thread',
        'canonical' => 'Thread',
      ),
      91 => 
      array (
        'id' => 91,
        'case' => 'first-letter',
        '*' => 'Thread talk',
        'canonical' => 'Thread talk',
      ),
      92 => 
      array (
        'id' => 92,
        'case' => 'first-letter',
        '*' => 'Summary',
        'canonical' => 'Summary',
      ),
      93 => 
      array (
        'id' => 93,
        'case' => 'first-letter',
        '*' => 'Summary talk',
        'canonical' => 'Summary talk',
      ),
      100 => 
      array (
        'id' => 100,
        'case' => 'first-letter',
        '*' => 'Conservapedia',
        'subpages' => '',
        'canonical' => 'Conservapedia',
      ),
      101 => 
      array (
        'id' => 101,
        'case' => 'first-letter',
        '*' => 'Conservapedia talk',
        'subpages' => '',
        'canonical' => 'Conservapedia talk',
      ),
      102 => 
      array (
        'id' => 102,
        'case' => 'first-letter',
        '*' => 'Essay',
        'subpages' => '',
        'canonical' => 'Essay',
      ),
      103 => 
      array (
        'id' => 103,
        'case' => 'first-letter',
        '*' => 'Essay talk',
        'subpages' => '',
        'canonical' => 'Essay talk',
      ),
      104 => 
      array (
        'id' => 104,
        'case' => 'first-letter',
        '*' => 'Debate',
        'subpages' => '',
        'canonical' => 'Debate',
      ),
      105 => 
      array (
        'id' => 105,
        'case' => 'first-letter',
        '*' => 'Debate talk',
        'subpages' => '',
        'canonical' => 'Debate talk',
      ),
      106 => 
      array (
        'id' => 106,
        'case' => 'first-letter',
        '*' => 'Fun',
        'subpages' => '',
        'canonical' => 'Fun',
      ),
      107 => 
      array (
        'id' => 107,
        'case' => 'first-letter',
        '*' => 'Fun talk',
        'subpages' => '',
        'canonical' => 'Fun talk',
      ),
      108 => 
      array (
        'id' => 108,
        'case' => 'first-letter',
        '*' => 'Recipe',
        'subpages' => '',
        'canonical' => 'Recipe',
      ),
      109 => 
      array (
        'id' => 109,
        'case' => 'first-letter',
        '*' => 'Recipe talk',
        'subpages' => '',
        'canonical' => 'Recipe talk',
      ),
      110 => 
      array (
        'id' => 110,
        'case' => 'first-letter',
        '*' => 'Forum',
        'subpages' => '',
        'canonical' => 'Forum',
      ),
      111 => 
      array (
        'id' => 111,
        'case' => 'first-letter',
        '*' => 'Forum talk',
        'subpages' => '',
        'canonical' => 'Forum talk',
      ),
    ),
  ),
)