A Hot Key is basically a shortcut key for performing an action by pressing a keyboard button or a combination of keyboard strokes to perform an action.
PokerStars HotKeys are still in Beta stage but are available for anyone to use, to activate the hotkey feature simply enable it via Options > Hot Key Settings > Enable hotkeys then manually configure your preferred PokerStars keyboard shortcuts per action for example you could set the C button on your keyboard to perform the action of calling and the F key to mean fold, for more in depth information about configuring the hotkeys for PokerStars see the images that follow below.
Another pretty nice feature that perplexes many a player at Pokerstars is:
How to Show One Card Only at PokerStars?
Answer: To show one card after folding at PokerStars, firstly ensure that the options to always muck cards are disabled, these options can be found from the lobby under Options > Showing / Mucking hands > “Muck loosing hands” should be off as should “Don’t show winning hand”, they should all be unticked. To show one card you can click on your card you wish to show and it will become enlarged with an eye on it, if you wish to show both your cards then click on both. For more information about showing one card at PokerStars see the images that follow below.
The full PokerStars Hotkey list showing all available standard shortcut keys follows in the rest of this article.