I believe that the game is EXACTLY PLAYED as the HELP screen says it is. To make any assumptions about the game, as in how it may work or one thinks it should work, can be a mistake in my opinion. If the help is silent about a feature of the game, then that feature is not part of the game!
It is my understanding that the games play out specifically and exactly as how the help screens say it is. I have asked Slot techs and Slot managers this question, who also looked at help screens and they said the machine function with the features as how the help says. "If the feature I am looking for is not in the help, it is then not in the game."
Here is a link to two help screen shots, from different machines though from the same company.
http://imgur.com/a/FgJaJ
A casino manager once told me, when I ran in to a CLASS 2 Video Poker machine and complained it was deceptive, that: "It is the players responsibility to evaluate the game, read the help screens, and then decide if they will pay it or not."
As a player, we can assume NOTHING these days.