Five formats under CCC §§1655-1672
1) Ordinary (§1656) — typed, signed before two witnesses. 2) Holographic (§1657) — fully hand-written, no witness required. 3) Public document (§1658) — signed at the amphur, original held by the state. 4) Secret document (§1660) — sealed and lodged at the amphur. 5) Made abroad (§1667) — at a Thai Embassy. NYC recommends format 3 for foreigners because the state custodies the original and prevents forgery.