Secret Code

The  (aka Tic Tac Code) was the form that PSA and EPF agents used to communicate in secret. This code was often used in the PSA Missions and could be found around the island.

Syntax
The code was represented as 3 different 3&times;3 grids, each with the next 9 letters of the English alphabet. The letters in each grid occupied all 9 cells by their order, from left to right and top to bottom, starting at the upper-left corner. Each cell had borders with the surrounding cells (up, down, left and right), and the Tic Tac Code version of a letter was based on which sides of the cells had a neighbour. Finally, each letter was given a symbol in the middle. The first grid (A to I) had no symbol, the second (J to R) used an "X", and the third (S to Z) used an "O".



Appearances

 * PSA Missions
 * EPF Handbook