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<?php

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/**

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* kses 0.2.2 - HTML/XHTML filter that only allows some elements and attributes

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* This program is free software and open source software; you can redistribute

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* it and/or modify it under the terms of the GNU General Public License as

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* published by the Free Software Foundation; either version 2 of the License,

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* or (at your option) any later version.

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* This program is distributed in the hope that it will be useful, but WITHOUT

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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for

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* more details.

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* You should have received a copy of the GNU General Public License along

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* with this program; if not, write to the Free Software Foundation, Inc.,

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* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA

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* http://www.gnu.org/licenses/gpl.html

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* [kses strips evil scripts!]

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* Added wp_ prefix to avoid conflicts with existing kses users

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* @version 0.2.2

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* @author Ulf Harnhammar <http://advogato.org/person/metaur/>

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* @package External

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* @subpackage KSES

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/**

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* Specifies the default allowable HTML tags.

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* Using `CUSTOM_TAGS` is not recommended and should be considered deprecated. The

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* {@see 'wp_kses_allowed_html'} filter is more powerful and supplies context.

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* When using this constant, make sure to set all of these globals to arrays:

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* - `$allowedposttags`

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* - `$allowedtags`

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* - `$allowedentitynames`

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* - `$allowedxmlentitynames`

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* @see wp_kses_allowed_html()

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* @since 1.2.0

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* @var array[]|false Array of default allowable HTML tags, or false to use the defaults.

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if ( ! defined( 'CUSTOM_TAGS' ) ) {

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define( 'CUSTOM_TAGS', false );

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}

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// Ensure that these variables are added to the global namespace

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// (e.g. if using namespaces / autoload in the current PHP environment).

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global $allowedposttags, $allowedtags, $allowedentitynames, $allowedxmlentitynames;

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if ( ! CUSTOM_TAGS ) {

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/**

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* KSES global for default allowable HTML tags.

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* Can be overridden with the `CUSTOM_TAGS` constant.

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* @var array[] $allowedposttags Array of default allowable HTML tags.

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* @since 2.0.0

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$allowedposttags = array(

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'address' => array(),

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'a' => array(

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'href' => true,

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'rel' => true,

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'rev' => true,

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'name' => true,

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'target' => true,

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'download' => array(

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'valueless' => 'y',

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'abbr' => array(),

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'acronym' => array(),

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'area' => array(

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'alt' => true,

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'coords' => true,

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'href' => true,

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'nohref' => true,

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'shape' => true,

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'target' => true,

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'article' => array(

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'align' => true,

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'aside' => array(

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'align' => true,

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'audio' => array(

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'autoplay' => true,

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'controls' => true,

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'loop' => true,

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'muted' => true,

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'preload' => true,

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'src' => true,

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'b' => array(),

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'bdo' => array(),

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'big' => array(),

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'blockquote' => array(

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'cite' => true,

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'br' => array(),

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'button' => array(

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'disabled' => true,

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'name' => true,

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'type' => true,

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'value' => true,

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'popovertarget' => true,

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'popovertargetaction' => true,

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'aria-haspopup' => true,

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'caption' => array(

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'align' => true,

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'cite' => array(),

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'code' => array(),

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'col' => array(

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'align' => true,

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'char' => true,

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'charoff' => true,

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'span' => true,

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'valign' => true,

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'width' => true,

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'colgroup' => array(

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'align' => true,

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'char' => true,

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'charoff' => true,

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'span' => true,

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'valign' => true,

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'width' => true,

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'data' => array(

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'value' => true,

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'del' => array(

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'datetime' => true,

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'dd' => array(),

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'dfn' => array(),

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'details' => array(

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'align' => true,

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'open' => true,

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'name' => true,

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'div' => array(

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'align' => true,

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'popover' => true,

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'dialog' => array(

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'closedby' => true,

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'open' => true,

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'popover' => true,

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'dl' => array(),

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'dt' => array(),

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'em' => array(),

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'fieldset' => array(),

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'figure' => array(

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'align' => true,

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'figcaption' => array(

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'align' => true,

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'font' => array(

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'color' => true,

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'face' => true,

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'size' => true,

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'footer' => array(

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'align' => true,

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'h1' => array(

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'align' => true,

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'h2' => array(

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'align' => true,

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'h3' => array(

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'align' => true,

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'h4' => array(

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'align' => true,

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'h5' => array(

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'align' => true,

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'h6' => array(

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'align' => true,

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'header' => array(

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'align' => true,

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'hgroup' => array(

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'align' => true,

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'hr' => array(

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'align' => true,

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'noshade' => true,

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'size' => true,

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'width' => true,

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'i' => array(),

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'img' => array(

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'alt' => true,

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'align' => true,

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'border' => true,

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'height' => true,

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'hspace' => true,

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'loading' => true,

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'longdesc' => true,

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'vspace' => true,

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'src' => true,

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'usemap' => true,

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'width' => true,

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'ins' => array(

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'datetime' => true,

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'cite' => true,

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'kbd' => array(),

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'label' => array(

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'for' => true,

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'legend' => array(

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'align' => true,

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'li' => array(

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'align' => true,

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'value' => true,

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'main' => array(

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'align' => true,

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'map' => array(

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'name' => true,

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'mark' => array(),

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'menu' => array(

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'type' => true,

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'meter' => array(

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'high' => true,

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'low' => true,

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'max' => true,

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'min' => true,

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'optimum' => true,

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'value' => true,

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'nav' => array(

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'align' => true,

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'object' => array(

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'data' => array(

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'required' => true,

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'value_callback' => '_wp_kses_allow_pdf_objects',

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'type' => array(

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'required' => true,

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'values' => array( 'application/pdf' ),

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'p' => array(

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'align' => true,

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'pre' => array(

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'width' => true,

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'progress' => array(

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'max' => true,

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'value' => true,

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'q' => array(

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'cite' => true,

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'rb' => array(),

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'rp' => array(),

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'rt' => array(),

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'rtc' => array(),

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'ruby' => array(),

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's' => array(),

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'samp' => array(),

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'search' => array(),

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'span' => array(

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'align' => true,

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'section' => array(

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'align' => true,

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'small' => array(),

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'strike' => array(),

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'strong' => array(),

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'sub' => array(),

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'summary' => array(

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'align' => true,

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'sup' => array(),

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'table' => array(

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'align' => true,

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'bgcolor' => true,

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'border' => true,

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'cellpadding' => true,

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'cellspacing' => true,

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'rules' => true,

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'summary' => true,

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'width' => true,

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'tbody' => array(

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'align' => true,

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'char' => true,

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'charoff' => true,

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'valign' => true,

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'td' => array(

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'abbr' => true,

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'align' => true,

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'axis' => true,

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'bgcolor' => true,

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'char' => true,

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'charoff' => true,

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'colspan' => true,

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'headers' => true,

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'height' => true,

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'nowrap' => true,

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'rowspan' => true,

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'scope' => true,

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'valign' => true,

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'width' => true,

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'textarea' => array(

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'cols' => true,

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'rows' => true,

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'disabled' => true,

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'name' => true,

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'readonly' => true,

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'tfoot' => array(

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'align' => true,

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'char' => true,

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'charoff' => true,

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'valign' => true,

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'th' => array(

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'abbr' => true,

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'align' => true,

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'axis' => true,

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'bgcolor' => true,

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'char' => true,

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'charoff' => true,

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'colspan' => true,

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'headers' => true,

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'height' => true,

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'nowrap' => true,

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'rowspan' => true,

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'scope' => true,

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'valign' => true,

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'width' => true,

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'thead' => array(

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'align' => true,

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'char' => true,

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'charoff' => true,

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'valign' => true,

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'time' => array(

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'datetime' => true,

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'title' => array(),

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'tr' => array(

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'align' => true,

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'bgcolor' => true,

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'char' => true,

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'charoff' => true,

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'valign' => true,

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'track' => array(

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'default' => true,

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'kind' => true,

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'label' => true,

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'src' => true,

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'srclang' => true,

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'tt' => array(),

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'u' => array(),

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'ul' => array(

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'type' => true,

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'popover' => true,

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'role' => true,

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'ol' => array(

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'start' => true,

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'type' => true,

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'reversed' => true,

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'var' => array(),

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'video' => array(

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'autoplay' => true,

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'controls' => true,

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'height' => true,

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'loop' => true,

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'muted' => true,

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'playsinline' => true,

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'poster' => true,

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'preload' => true,

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'src' => true,

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'width' => true,

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'wbr' => array(),

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);

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// https://www.w3.org/TR/mathml-core/#global-attributes

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// Except common attributes added by _wp_add_global_attributes.

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$math_global_attributes = array(

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'displaystyle' => true,

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'scriptlevel' => true,

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'mathbackground' => true,

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'mathcolor' => true,

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'mathsize' => true,

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// Common attributes also defined by _wp_add_global_attributes.

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// We do not want to add all those global attributes though.

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'class' => true,

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'data-*' => true,

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'dir' => true,

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'id' => true,

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'style' => true,

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);

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$math_overunder_attributes = array(

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'accentunder' => true,

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'accent' => true,

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);

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$allowedposttags = array_merge(

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$allowedposttags,

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array(

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// https://www.w3.org/TR/mathml-core/#the-top-level-math-element

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'math' => array_merge(

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$math_global_attributes,

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array(

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'display' => true,

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)

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// https://www.w3.org/TR/mathml-core/#token-elements

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// https://www.w3.org/TR/mathml-core/#text-mtext

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'mtext' => $math_global_attributes,

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// https://www.w3.org/TR/mathml-core/#the-mi-element

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'mi' => array_merge(

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$math_global_attributes,

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array(

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'mathvariant' => true,

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)

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// https://www.w3.org/TR/mathml-core/#number-mn

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'mn' => $math_global_attributes,

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// https://www.w3.org/TR/mathml-core/#operator-fence-separator-or-accent-mo

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'mo' => array_merge(

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$math_global_attributes,

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array(

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'form' => true,

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'fence' => true,

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'separator' => true,

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'lspace' => true,

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'rspace' => true,

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'stretchy' => true,

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'symmetric' => true,

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'maxsize' => true,

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'minsize' => true,

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'largeop' => true,

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'movablelimits' => true,

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)

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// https://www.w3.org/TR/mathml-core/#space-mspace

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'mspace' => array_merge(

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$math_global_attributes,

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array(

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'width' => true,

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'height' => true,

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'depth' => true,

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)

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// https://www.w3.org/TR/mathml-core/#string-literal-ms

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'ms' => $math_global_attributes,

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// https://www.w3.org/TR/mathml-core/#general-layout-schemata

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// https://www.w3.org/TR/mathml-core/#horizontally-group-sub-expressions-mrow

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'mrow' => $math_global_attributes,

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// https://www.w3.org/TR/mathml-core/#fractions-mfrac

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'mfrac' => array_merge(

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$math_global_attributes,

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array(

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'linethickness' => true,

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