Lili ndi ntchito ya pafupipafupi kutembenuka liwiro kusintha, basi / Buku kulamulira kutsogolo ndi kumbuyo akuthamanga, kuyimitsa, kupopera nkhungu, kudyetsa zinthu, kutentha kusintha / kuchepa, chinyezi kuwonjezeka / kuchepa, manambala kulamulira kasinthasintha liwiro, pabwino kuyimitsa, kusinthasintha kuyambira ndi retarding mabuleki, komanso nthawi-kuchedwa kuyamba ndi kuyimitsa, timer alamu, chitetezo ku zolakwa, chitetezo chitseko, etc. amatengera mpweya yamphamvu pagalimoto kuti akwaniritse ntchito mosavuta ndi odalirika kusindikiza zotsatira. Makinawa amaikidwa m'mapangidwe ofunikira kuti azindikire ntchito yabwino komanso kusindikiza kodalirika. Ndilo mankhwala abwino kuti alowe m'malo mwa omwe adatumizidwa kunja ndi kuyika konse, ntchito yokhazikika, makina apamwamba kwambiri, kupulumutsa mphamvu, kuteteza chilengedwe ndi maonekedwe okongola.