Formats text to add/remove spaces, change the letter case, reverse text and show in groups.
Counts the frequency of letters, numbers and punctuation. Show single frequency, digraphs, trigraphs and tetragraphs.
Provide statistics on text. Used to determine the period of text for cipher types using a repeated key, e.g. Vigenère, Beaufort, Variant Beaufort, Porta etc.
Index of Coincidence