nl_tokens: Executes the specified function once for every item in the collection .
pl_tokens: function ( fn , scope ) { var items = [ ] . concat ( this . items ) , // each safe for removal i = 0 , len = items . length , item ; for ( ; i < len ; i ++ ) { item = items [ i ] ; if ( fn . call ( scope || <mask> , item , i , len ) === false ) { break ; } } }