天台智者製法華經之序而題為序王。王者起也，初也，序者眾文之起初，故名序王。釋籤一之一曰：「王字去聲，謂起也、初也。序起眾文之始故云序王。」
The introduction by Chih-i to the Lotus Sutra. Introductions are divided into 序, 正, and 流通, the first relating to the reason for the book; the second to its method; and the third to its subsequent history.
一序王 指天台智者大師所制法華經之序。王，起、初之義；以序為眾文之起初，故智者大師題為序王。〔法華玄義釋籤卷一之一〕p3628