Yonke injongo yokuvala intambo ikwabizwa ngokuba yiyo yonke injongo yokuvala intambo, izixhobo ezahlukeneyo ezifana nevili lesandla sevalve kunye nentambo eguquguqukayo ejikeleze isibambo sokutshintsha, iswitshi yombane kunye nomqheba, izibambo zocango lwekhabhathi yombane, njl. njl., emva koko ujikeleze ngasemva ukubamba uhlobo lokutshixa intambo umngxuma womzimba (bamba kuphela isitshixo sentambo kwimingxuma yentambo), de intambo ibotshelelwe ngokuqinileyo ukukhulula umzimba wokutshixa intambo, kwaye emva koko uxhome isitshixo sokhuseleko kunye neethegi zokutshixa.