Ukukhanya okungxamisekileyo luhlobo lwezibane ezinokukhanyisa ngokufanelekileyo kwaye zibonise umjelo wokukhupha xa umbane oqhelekileyo wokukhanyisa uhluleka, okanye unokuqhubeka nokukhanyisa kunye nokusebenza ngaphandle kokuphazamiseka.Isetyenziswa kakhulu kwiindawo zikawonke-wonke kunye neendawo ezinokukhanya okungaphazamisekiyo.