nl_tokens: Walks the dom left / right to find a suitable text node to move the endpoint into It will only walk within the current parent block or body and will stop if it hits a block or a BR / IMG
pl_tokens: function findTextNodeRelative ( left , startNode ) { var walker , lastInlineElement ; startNode = startNode || container ; walker = <mask> TreeWalker ( startNode , dom . getParent ( startNode . parentNode , dom . isBlock ) || body ) ; // Walk left until we hit a text node we can move to or a block/br/img
   while ( node = walker [ left ? 'prev' : 'next' ] ( ) ) { // Found text node that has a length
   if ( node . nodeType === 3 && node . nodeValue . length > 0 ) { container = node ; offset = left ? node . nodeValue . length : 0 ; normalized = true ; return ; } // Break if we find a block or a BR/IMG/INPUT etc
   if ( dom . isBlock ( node ) || nonEmptyElementsMap [ node . nodeName . toLowerCase ( ) ] ) { return ; } lastInlineElement = node ; } // Only fetch the last inline element when in caret mode for now
   if ( collapsed && lastInlineElement ) { container = lastInlineElement ; normalized = true ; offset = 0 ; } }