1. Ua ntej, xyuas seb txoj hauj lwm ntawm daim ntawv nyiaj txiag puas tsim nyog thiab seb nws puas haum rau lub tais ntawv. Thaum muab daim ntawv, nws yuav tsum muab tso rau hauv tiaj tus. Txhawm rau kom tsis txhob muaj xwm txheej thaum daim ntawv tais nkag rau hauv daim ntawv;
2. Txawm hais tias lub taub hau ntawm lub tshuab luam ntawv muab tso rau hauv ib txoj hauj lwm haum rau cov txheej ntawm cov ntawv, kom tsis txhob lub taub hau luam ntawv nyob ze rau ntawm daim ntawv, uas yuav ua rau muaj kev sib txhuam ribbon thiab ntawv jam;
3. Tom qab luam ntawv, nws yuav tsum muab tso rau ntawm daim ntawv pub zaub mov kom cov ntawv tuaj yeem luam tawm sai;
4. Thaum siv daim ntawv tiaj tus, koj yuav tsum xaiv lub tshuab luam ntawv uas tsim nyog.
