$cF=array('button'=>1,'del'=>1,'div'=>1,'dd'=>1,'fieldset'=>1,'iframe'=>1,'ins'=>1,'li'=>1,'noscript'=>1,'object'=>1,'td'=>1,'th'=>1);// Flow; later context-wise dynamic move of ins & del to $cI
$cS=array('colgroup'=>array('col'=>1),'dir'=>array('li'=>1),'dl'=>array('dd'=>1,'dt'=>1),'menu'=>array('li'=>1),'ol'=>array('li'=>1),'optgroup'=>array('option'=>1),'option'=>array('#pcdata'=>1),'rbc'=>array('rb'=>1),'rp'=>array('#pcdata'=>1),'rtc'=>array('rt'=>1),'ruby'=>array('rb'=>1,'rbc'=>1,'rp'=>1,'rt'=>1,'rtc'=>1),'select'=>array('optgroup'=>1,'option'=>1),'script'=>array('#pcdata'=>1),'table'=>array('caption'=>1,'col'=>1,'colgroup'=>1,'tfoot'=>1,'tbody'=>1,'tr'=>1,'thead'=>1),'tbody'=>array('tr'=>1),'tfoot'=>array('tr'=>1),'textarea'=>array('#pcdata'=>1),'thead'=>array('tr'=>1),'tr'=>array('td'=>1,'th'=>1),'ul'=>array('li'=>1));// Specific - immediate parent-child
$cO=array('address'=>array('p'=>1),'applet'=>array('param'=>1),'blockquote'=>array('script'=>1),'fieldset'=>array('legend'=>1,'#pcdata'=>1),'form'=>array('script'=>1),'map'=>array('area'=>1),'object'=>array('param'=>1,'embed'=>1));// Other
$eN=array('a'=>1,'big'=>1,'button'=>1,'fieldset'=>1,'font'=>1,'form'=>1,'iframe'=>1,'img'=>1,'input'=>1,'label'=>1,'object'=>1,'ruby'=>1,'script'=>1,'select'=>1,'small'=>1,'sub'=>1,'sup'=>1,'textarea'=>1);// Exclude from specific ele; $cN values
$eO=array('area'=>1,'caption'=>1,'col'=>1,'colgroup'=>1,'dd'=>1,'dt'=>1,'legend'=>1,'li'=>1,'optgroup'=>1,'option'=>1,'param'=>1,'rb'=>1,'rbc'=>1,'rp'=>1,'rt'=>1,'rtc'=>1,'script'=>1,'tbody'=>1,'td'=>1,'tfoot'=>1,'thead'=>1,'th'=>1,'tr'=>1);// Missing in $eB & $eI