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array(
  'type'     => 'text',                             // This is a regular <input> tag.
  'label'    => $this->l('Name'),                   // The <label> for this <input> tag.
  'name'     => 'name',                             // The content of the 'id' attribute of the <input> tag.
  'sizeclass'     => 50'lg',                                 // The content of the 'sizeclass' attribute of the <input> tag. To set the size of the element, use these: sm, md, lg, xl, or xxl.
  'required' => true,                               // If set to true, this option must be set.
  'desc'     => $this->l('Please enter your name.') // A help text, displayed right next to the <input> tag.
),