Isakhiwo sensimbi yomnyango womlilo wensimbi sinokuqinisekisa ukuba akulula ukungqubana kunye nokukhubazeka, kwaye akulula ukonakalisa amandla angaphandle, kwaye inokusetyenziswa ngokuqhelekileyo ixesha elide ngaphandle kokutshintshwa. Ngaphantsi kwesiseko sokuqinisekisa umphumo womlilo, umnyango womlilo wensimbi uneempawu zokukhuselwa kwendalo kunye nokuqina.