When writing systems were created in ancient civilizations, a variety of objects, such as stone, clay, tree bark, metal sheets, and bones, were used for writing these are studied in epigraphy
जेव्हा पुरातन संस्कृतीत, लेखन प्रणाली शोधण्यात आली, त्यावेळेस लेखनासाठी दगड, माती, झाडांची साल, धातूचे पत्रे इत्यादींचा वापर होत असे.