Acrostic Cipher
Abbot Trithemius wrote about secret messages. He invented STEGANOGRAPHY.
Too Simple For Words
Trithemius wrote a wicked book in about 1496: STEGANOGRAPHIA.
He gave methods of hiding texts within texts; some of which are tedious. The Holy Inquisition visited him to ascertain whether he practiced magic. Steganographia circulated in manuscript for over a century and attracted the attention of scholars such as John Dee and Francis Bacon.
Here is an Acrostic-Telestic cipher message written in Cod Latin.
ASSIGNATION
MENTE ERAT MEMENTE IN TARTH EPSIS UNIUM MORE RISOH OPERU SITE ADHUT SULLU NONIAD OCHOW NIX
Codes and Ciphers is about communication: sure, we do puzzles and secrets as well …