Option for "Absolute" Pause button Instead of Toggle

[Zombra]

Sometimes, when I panic in a bad situation, I accidentally hit the space bar twice, three times, is time passing?  I don't know, better hit it again, oh my guy died.

For me, it would be great for space bar to stop time, guaranteed.  If time is already stopped, it simply stays stopped.  Start time up again with 1-3 which is what I usually use.

Obviously this would need to be an option as most people are used to a toggle.  Thank you for your attention.