These could vary depending on what chart you’re using so read the key carefully.
For example H stands for hit, S represents stand, P stands for split and so on. Good online blackjack hit charts are colour coded with letters standing for the action with a key to match. The most important key when using a blackjack strategy chart if you are reading it correctly as it tells you when to hit, stand, split, double, or surrender and if you mix these actions up and perform them at the wrong time you could lose when you potentially could’ve won.
