Aeon418
MacGregor Mathers organized the approach in four areas: Practical, Literary, Unwritten and Dogmatic.
It's a useful way to categorize different things that fall under one name. Some people prefer this to spelling distinctions like Kabbalah, Qabalah, Cabalah, etc.
1) Practical: Applied Qabalah, theurgy, ceremonial magick, talismans, divination, Tarot, initiation schemes, etc.
2) Literal: Gematria, Temurah, Notariqon.
3) Unwritten:
4) Dogmatic: Doctrinal teachings and speculative works. Sepher ha-Zohar, Sepher Yetzirah, Sepher Bahir.
Hermetic Qabalah tends to focus on category 1) Practical. Most of the Qabalistic literature written within the tradition (Fortune, Regardie, Denning & Philips, etc.) is applied practical Qabalah. In Hebraic Kabbalah the focus is more on category 4.