For example, to find out the different duties performed during different historical periods by the official known as a shang-shu, all one has to do is to type in the two characters for shang-shu with the sign for "official title" and the computer will search the proper file and list each occurrence of the term together with the number of the volume, page, and paragraph in which it is found.
例如要查「尚書」這個官職歷代職掌的業務有何不同，只要在字鍵上按入「尚書」兩個字，電腦就會先找到有「<」符號的索引檔案，從裡頭再找出所有資料中曾提到「尚書」的段落，並列出在那本書、第幾頁、第幾段上。