Text - Plain Text
Table of Contents
1 - About
Plain text is a document that is accessed as a sequence of characters (without structure, no tree, etc …)
Another definition is when everything except primary content is removed from rich text, only plain text should remain.
Plain text is also used in crypto to design what should be encrypted. See Cryptography - Input Data (plain text | clear text | message)
2 - Articles Related
3 - Mime type
The mime type of a plain text is text/plain.