title: Command or keyboard shortcut to clear command history in RStudio
body: <p>What is the command or keyboard shortcut equivalent to pressing the little broom button in the History window of RStudio which clears out the entire history buffer in the current session?</p>
  
  <p>Note that I don't mean <kbd>Ctrl</kbd> + <kbd>L</kbd> which clears the command window, I mean clearing history which is accessed by pressing the up-arrow.</p>