法華論疏 2.415

2.415

就釋中為二：第一正釋、第二引前二法證釋。就初又三：前開六門、次釋六門也、後結六門。開六門者，即是開此正說經為六門也。後結六門者，即是結開此正說經為六門也。

Within the explanation there are two parts: first, the primary explanation; second, citing the two preceding teachings to corroborate the explanation. In the first part there are again three: first, opening six headings; next, explaining the six headings; and finally, concluding the six headings. Opening the six headings means opening this sūtra passage of the main discourse into six headings. Concluding the six headings means concluding this opening of the sūtra of the main discourse into six headings.