Medieval Latin manuscripts began with the Latin word "incipit," which translates into "Here begins ... " in English. This first sentence is referred to as the "incipit." Usually, the word "incipit" was followed by the title of the work and information on the author. Each chapter also often started with the word "incipit."
At the end of each chapter appeared a sentence starting with the word "explicit" ("Here ends ... " in English). This sentence is referred to as the "explicit". As "incipit" and "explicit" are independent from the text, they are sometimes printed in red.