nl_tokens: force LABjs to pause in execution at this point in the chain until the execution thus far finishes before proceeding
pl_tokens: function ( ) { if ( arguments . length > 0 ) { for ( var i = 0 ; i < arguments . length ; i ++ ) { chain . push ( arguments [ i ] ) ; } group = chain [ <mask> . length - 1 ] ; } else group = false ; advance_exec_cursor ( ) ; return chainedAPI ; }