What is high jack poker and how does it differ from other poker variations?

High Jack Poker is a variation of poker where the player in the "high jack" position, which is two seats to the right of the dealer, has the option to act last in each betting round. This gives the player an advantage by allowing them to see how other players have bet before making their own decision. This differs from other poker variations where the player in the high jack position may not have this advantage.