bit in text code example
Example: Binary text
A binary-to-text encoding is encoding of data in plain text.
More precisely, it is an encoding of binary data in a sequence of printable characters.
These encodings are necessary for transmission of data when the channel does not allow binary data (such as email or NNTP) or is not 8-bit clean.
PGP documentation (RFC 4880) uses the term "ASCII armor" for binary-to-text encoding when referring to Base64.