Inits the TSFE global object in the backend of Typo3

recreateTSFE.php

function buildTSFE($pid = 1) {
    global $BACK_PATH;
    
    //needed for TSFE
	require_once(PATH_t3lib.'class.t3lib_timetrack.php');
	require_once(PATH_t3lib.'class.t3lib_tsparser_ext.php');
	require_once(PATH_t3lib.'class.t3lib_page.php');
	require_once(PATH_t3lib.'class.t3lib_stdgraphic.php');

	require_once($BACK_PATH.'sysext/cms/tslib/class.tslib_fe.php');
	require_once($BACK_PATH.'sysext/cms/tslib/class.tslib_content.php');
	require_once($BACK_PATH.'sysext/cms/tslib/class.tslib_gifbuilder.php');
	/* Declare */
	$temp_TSFEclassName = t3lib_div::makeInstanceClassName('tslib_fe');

	/* Begin */
	if (!is_object($GLOBALS['TT'])) {
		$GLOBALS['TT'] = new t3lib_timeTrack;
		$GLOBALS['TT']->start();
	}

	if (!is_object($GLOBALS['TSFE']) && $pid) {
		//*** Builds TSFE object
		$GLOBALS['TSFE'] = new $temp_TSFEclassName($GLOBALS['TYPO3_CONF_VARS'],$pid,0,0,0,0,0,0);
		//*** Builds sub objects
		$GLOBALS['TSFE']->tmpl = t3lib_div::makeInstance('t3lib_tsparser_ext');
		$GLOBALS['TSFE']->sys_page = t3lib_div::makeInstance('t3lib_pageSelect');

		//*** init template
		$GLOBALS['TSFE']->tmpl->tt_track = 0;// Do not log time-performance information
		$GLOBALS['TSFE']->tmpl->init();

		$rootLine = $GLOBALS['TSFE']->sys_page->getRootLine($pid);
		$GLOBALS['TSFE']->rootLine = $rootLine;

        //*** This generates the constants/config + hierarchy info for the template.
		$GLOBALS['TSFE']->tmpl->runThroughTemplates($rootLine,$template_uid);
    		$GLOBALS['TSFE']->tmpl->generateConfig();
		$GLOBALS['TSFE']->tmpl->loaded=1;

		//*** Get config array and other init from pagegen
		$GLOBALS['TSFE']->getConfigArray();
		$GLOBALS['TSFE']->linkVars = ''.$GLOBALS['TSFE']->config['config']['linkVars'];

		if($GLOBALS['TSFE']->config['config']['simulateStaticDocuments_pEnc_onlyP'])
		{
			foreach(t3lib_div::trimExplode(',',$GLOBALS['TSFE']->config['config']['simulateStaticDocuments_pEnc_onlyP'],1) as $temp_p)
			{
				$GLOBALS['TSFE']->pEncAllowedParamNames[$temp_p]=1;
			}
		}
		//*** Builds a cObj
		$GLOBALS['TSFE']->newCObj();
	}
}