Because video poker is basically the integration of poker and slot machines, its history can be traced back to the invention of the slot machines itself. Charles Fey is the father of the slot machine. His slot machines had numbers on it and not poker hands. These coin-operated machines were developed in the U.S. in the 1800s and were very popular in saloons and cigar stores, especially in San Francisco.
Do not draw to a four-card inside straight -- one in which the missing card is in the middle rather than on either end -- unless it includes at least three high cards. A four-card open straight is one that has space open at either end to complete the hand; for example, a hand of 4-5-6-7 can use either a 3 at one end or an 8 at the other to complete the straight. An inside straight has space in the middle that must be filled to complete the hand; 4-6-7-8 needs a 5 to become a straight. Open straights give the player a better chance, with twice as many cards available to fill the straight.
This is to answer some of the previous reviewer's questions. The listing of the 5c Deuces Wild machines in at the Horseshoe Bossier City says they are on 50 play machines not progressives. Also according to the Comments section, they were just added four months ago. If you have any more questions, someone on the vpFREE Louisiana Yahoo Group may be able to answer them.
A straight is a hand with consecutive ranks, like 9? 7? 10? 8? 6?.  Notice again that the cards don't have to appear in order.  The order of face cards, from lowest to highest, is Jack, Queen, King, Ace, which we abbreviate J, Q, K, A.  An ace can also count as 1, to complete a straight where the other cards are 2, 3, 4, and 5.  But it can't count as both a low and a high card, e.g., Q K A 2 3.