Larian Studios Forums Divinity - Original Sin Divinity Original Sin - Help/Tips/Tricks Enemy casts spell {E} - whats that mean?

Hi all, new to the game and the forums. Loving it so far.

One question: frequently in the combat log you'll see:

(Enemy) casts (spell) {E}

what does the {E} mean? I can't seem to make any sense of it.

Thanks a bunch!