A signboard, stone tablet, or other similar thing that contains text written in Hylian, Zorian or other non-easily readable language. Upon reading normally, it displays a text in approriate language. When read with needed item in inventory, it prints a normally readable text (actually a different string). Use it to place important clues in your quest.
Also optionally the signboard can trigger secrets when decphered.

1. Find the constant named I_BOOK_OF_DECRYPTING, and change it to ID of your deciphering item (like Book of Mudora).
2. Import and compile the script.
3. Place FFC at the bottom of your signboard/tablet.
4. Set the aguments as followed:
//D0: String number for encrypted message.
//D1: String number for decrypted message.
//D2:
// 0 - No secret triggering, when decrypting message.
// 1 - Trigger temporary secrets after decrypting message.
// 2+ - Trigger permanent secrets after decrypting message.
D3: ID of item needed to decrypt text. Use this if you want to require different item for deciphering. Leave as 0 to use default item ID written in constant.
5. Assign the script to FFC.
6. Test and enjoy.

Headers: none beyond "std.zh".