In fact, it is not dissimilar to what editors did before computers, only now we don't use glue to paste a piece of paper onto another piece of paper.
N'ezie, ọ bụghị ihe yiri nke ndị editọ mere n'ihu kọmputa, ma ugbu a, anyị anaghị eji gluu dochie otu mpempe akwụkwọ na mpempe akwụkwọ ọzọ.