nl_tokens: This function executes the process handlers and inserts the contents force_rich overrides plain text mode set by user important for pasting with execCommand
pl_tokens: function process ( o , force_rich ) { var dom = ed . dom , rng ; // Execute pre process handlers
   t . onPreProcess . dispatch ( t , o ) ; // Create DOM structure
   o . <mask> = dom . create ( 'div' , 0 , o . content ) ; // If pasting inside the same element and the contents is only one block
   // remove the block and keep the text since Firefox will copy parts of pre and h1-h6 as a pre element
   if ( tinymce . isGecko ) { rng = ed . selection . getRng ( true ) ; if ( rng . startContainer == rng . endContainer && rng . startContainer . nodeType == 3 ) { // Is only one block node and it doesn't contain word stuff
   if ( o . node . childNodes . length === 1 && / ^(p|h[1-6]|pre)$ / i . test ( o . node . firstChild . nodeName ) && o . content . indexOf ( '__MCE_ITEM__' ) === - 1 ) dom . remove ( o . node . firstChild , true ) ; } } // Execute post process handlers
   t . onPostProcess . dispatch ( t , o ) ; // Serialize content
   o . content = ed . serializer . serialize ( o . node , { getInner : 1 , forced_root_block : '' } ) ; // Plain text option active?
   if ( ( ! force_rich ) && ( ed . pasteAsPlainText ) ) { t . _insertPlainText ( o . content ) ; if ( ! getParam ( ed , "paste_text_sticky" ) ) { ed . pasteAsPlainText = false ; ed . controlManager . setActive ( "pastetext" , false ) ; } } else { t . _insert ( o . content ) ; } }