四分律行事鈔資持記 1.537

1.537

注中。初明自然者，以結場時更出西南，別取步量。圖中不可雙示，故特點之。

In the notes: First, clarifying the natural boundary is because when consecrating the site, one further goes out to the southwest and separately takes measurements by paces. In the diagram both cannot be shown at once, so it is specifically marked with dots.