AP Photo/Jeff Roberson

Simone Biles is totally gonna Biles.

No, really. You can look it up.

The three-time world champion’s floor routine includes a singular tumbling run, one she caps with a move she created, one that can be found in the sport’s official Code of Points.

Concerned a few years ago about the pain in her Achilles every time she tried to complete her second pass with double-layout and full twist, Biles and coach Aimee Boorman decided to improvise. Rather than a full twist, Biles chose to do a half-twist and turn outward. Doing less sounds easier. It's not. The move required Biles to basically land blind because she can't see where her feet are in relation to the floor until the last second.

"It was almost kind of necessity is the mother of invention," Boorman said. "Her calf was hurting. She had bone spurs in her ankles and she's really good at floor with landings."

Here's what it looked like at a competition in 2015. The move starts at about 28 seconds in:

Biles took the combination to one of the U.S. national team training camps hoping to get a nod of approval from team coordinator Martha Karolyi and the rest of the staff. She did, kind of.

"They were like `OK, it's different but she lands it most of the time," Biles said with a laugh.

So Biles and Boorman videotaped it and sent it to the International Federation of Gymnastics before the 2013 world championships to let them know it was coming. Biles drilled it -- and the FIG technical committee approved it, putting the description in the code with Biles' name next to it.

The move is one of the reasons she’s expected to add the all-around title and the floor exercise gold medal later in the games. First things first, however: a podium-topping sendoff for Karolyi, who is retiring later this month.