Indike punika raris sampun kasuksmayang antuk ngumpamayang pinaka "sekresi saking organisme" miwah kabinayang saking kawéntenan sesuratan sané  sampun kasurat utawi sumeken kakaryanin anggén maosang piteket-piteket majeng ring pianak cucu kapungkur wekas.
They have been metaphorically defined as "the secretions of an organism", and are distinguished from documents that have been consciously written or created to communicate a particular message to posterity.