It contains an introduction to ACA, a list of jargon and terms used in our publications, and the standards used for constructing cryptograms for publication. The handbook contains descriptions of all the cipher systems appearing in The Cryptogram . We have the pleasure of learning the various cipher systems that have been used throughout history. Then, there is a thrill in making sense of what appears to be a meaningless jumble. It's a form of puzzle solving a bit like crosswords, but more challenging and engrossing.
Cryptography is an ideal way to keep mentally alert.
Recovery can be a valuable aid in solving. Here are two of the most commonly used of the available eight types. Tips are always given in this form, and appear in capital letters, usually within parentheses. Tips are enciphered to provide extra help for solvers if needed. A Caesar tip is enciphered by moving forward or backward in the alphabet a certain number of positions.