Improved
AVNRT in the simulator, from the 12-lead engine
Before
The simulator drew AVNRT with its own simpler model, so the rhythm looked different from the 12-lead's, and its article repeated what the 12-lead page now teaches.
After
The simulator's AVNRT is the 12-lead engine's lead II: the same regular 182 per minute, the same narrow QRS, and the small S on the end of each QRS where the retrograde P lands. The article is cut to the basics, with a card on to the 12-lead page.