The document provides an introduction and overview of the KET Vocabulary List, which is used to guide item writers in producing materials for the KET examination. It discusses how the list was originally developed, how it covers both receptive and productive vocabulary at the A2 level, and how it is updated annually based on reference to the Cambridge Learner Corpus and English Vocabulary Profile. The summary also notes that the list does not include every word that may appear on the exam and covers both receptive and productive vocabulary.