請觀音經疏闡義鈔 1.5

1.5

The four characters 'Qing Guanyin jing' are the specific title of the commentary. 'Commentary' (shu) is the general title. Because 'commentary' is the general title for explaining various sūtras, the four characters are briefly indicated to distinguish it specifically. 'Shu' means to loosen and to decide; it untangles the sūtra text and discerns its purports and significance. Furthermore, when Zhizhe explained a sūtra, explaining the title was called 'profound meaning' (xuanyi), while explaining the text was called 'words and phrases' (wenju). When the profound text and the text are combined into a single work, it is titled a 'commentary' (shu). Now, because they are combined here, it is titled a 'commentary.'