Shōnagon became popular through her work The Pillow Book, a collection of lists, gossip, poetry, observations and complaints written during her years in the court, a miscellaneous genre of writing known as zuihitsu. The Pillow Book was circulated at court, and for several hundred years existed in handwritten manuscripts. First printed in the 17th century, it exists in different versions: the order of entries may have been changed by scribes with comments and passages added, edited, or deleted.