Editing Null cipher (section)

== Acrostics ==
{{main|Acrostic}}

The [[Acrostic (puzzle)|acrostic puzzle]] is an extended form of null cipher, but not an anacrostic (which uses a set of lettered clues with numbered blanks representing the letters of the answer to figure out the second part, a long series of numbered blanks and spaces representing a message into which the answers for the clues fit). Hidden or otherwise unmentioned acrostics are a type of null cipher.<ref>{{Cite web |title=Steganography |url=https://www.garykessler.net/library/steganography.html |access-date=2023-09-24 |website=www.garykessler.net}}</ref>

This method can be used to secretly insult a famous or important individual. For example, [[Rolfe Humphries]] received a lifelong ban from contributing to [[Poetry Magazine]] after he wrote and tried to publish "a poem containing a concealed scurrilous phrase aimed at a well-known person", namely [[Nicholas Murray Butler]].{{Citation needed|date=June 2023}}