Definition: "Kef" is an acronym for "Kendall's Fiddle Keyboard." A JavaScript library that allows web developers to create dynamic, interactive HTML forms with user input. Definition: Kef (known as FCK Editor in some cases) is a JavaScript library used to make dynamic, interactive HTML forms more responsive and usable by web browsers. It allows developers to write code directly on the page without needing to modify HTML or CSS. This makes it easier for web designers to create custom forms that can be adapted to different screen sizes, devices, or browser versions.