Peniel informed Jack that learning a rune technique wasn't the same as learning normal skills where one only needed to click the book's interface. Accepting to learn a rune technique would take the user into a learning space, which was a separate dimension. There, the user must memorize all the rune symbols scattered around the space. Afterward, the user would have to practice forming the runes.
Apparently, this process was the same as when one learned a mega spell. The difference was, a rune technique had more runes to be memorized, but it was smaller and less complicated than the runes of magic spells. Still, each one was a different rune, so memorizing all of them was a problem if one didn't have a good memory. Luckily, Jack's intelligence stat was high enough to let him memorize all of them easily.
