法華玄義釋籤 8.34

8.34

次四空處為五：先標修意，次「滅色」下略出定體，三「方便者」下明修相，四「復次」下明所離相，五指廣。根本淨禪有三者。

Next, the four immaterial stations are divided into five parts: first, indicating the intention of cultivation; next, from "Extinguishing form" below, briefly setting forth the essence of concentration; third, from "The expedients are…" below, clarifying the characteristics of cultivation; fourth, from "Furthermore" below, clarifying the characteristics of what is separated from; fifth, pointing to the detailed [explanations]. There are three kinds of fundamental pure dhyānas.