Book Cipher — Flexible Parts

Codes

Plaintext

Book codes can have one or more parts. For example this book code has two parts (where 14 belongs to the first part and 3 to the second part):

14:3 8:2 5:1

Setting Part 1 to Line number and Part 2 to Character number means that for 14:3 we would take character number 3 on line 14, and so on.

If there is only one part, like this example:

12 6 7

you should set Part 2 and Part 3 to None.

• Parts can use colon as separator (14:3) or dash (14-3).
• Each group must be separated by spaces.

Part 1

• Page number
• Line number
• Word number
• Character number

Part 2

• Page number
• Line number
• Word number
• Character number
• None

Part 3

• Page number
• Line number
• Word number
• Character number
• None

How extraction works

• Character (deepest): take that character from the chosen Word (if any) or from the Line (counts honor “Ignore spaces”).
• Word (deepest): returns the full word (as written in the line).
• Line only: returns the first letter of that line.
• Page only: returns the first letter of the page’s first line.

0 = space token in codes. “Ignore spaces” affects only Character-number selection.