As PROC GLM sends each output object to the Output Delivery System, ODS sends all the output objects to the HTML and Listing destinations. (See the table of contents in Contents File Produced by the ODS HTML Statement.)

The QUIT statement ends the procedure. Because the list uses the argument ALL, ODS does not automatically modify it when the procedure step ends.

proc glm data=iron;
   model loss=fe;
   title 'All Output Objects Selected';