Abamakishi bomhlophe luhlobo lwepeyinti yemarike eyilelwe ngokusetyenziswa kwindawo engeyiyo i-porous enjengebhodi emhlophe, iglasi. Ezi manqaku zinee-inki ezikhawulezayo ezikhawulezayo ezinokupheliswa ngokulula nelaphu eyomileyo okanye eraser, ibetha ukuze icwangciswe okwethutyana.