A back section of a Tibetan text about or by those who wrote down or compiled the words of a teaching, and/or about the process of redaction. An example is rdzogs pa chen po snying khrid man ngag gi rgyud/_slob dpon dga' rab rdo rjes yi ger bkod pa rdzogs so/, from "The Collected Tantras of the Ancients Collection" Tb.199, Vol. 8, 727.1-727.2. For a text that is a Treasure text (gter ma), if there is both a colophon about the text's concealer and a separate colophon about the text's revealer, then the colophon about the revealer is classified as a Redactor's colophon.