{HEAD ~ Such control units} select {TAIL ~ various modes} of operation, which may include heating, ventilation, maximum air conditioning, normal air conditioning, windshield defogging or defrosting, use of floor, panel and windshield air outlets, recirculation of inside air, intake of outside air, and OFF, for example 
select
{ HEAD ~ Such control units } select { TAIL ~ various modes } of operation , which may include heating , ventilation , maximum air conditioning , normal air conditioning , windshield defogging or defrosting , use of floor , panel and windshield air outlets , recirculation of inside air , intake of outside air , and OFF , for example
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH