The 'D' in the term "D-Mail" from the game "Steins; Gate" is short for what?

The "D" in the term "Dmail" from the game Steins;Gate is short for "DeLorean." This is a nod to the iconic time-traveling car from the movie "Back to the Future," as the game heavily incorporates time travel elements into its storyline. The DeLorean, famously used by Dr. Emmett Brown and Marty McFly to traverse through different eras, symbolizes the game's focus on altering the past through the use of digital mail or "Dmail" in Steins;Gate.