Abstract
In this paper, we developed a tool called “CodEx GUI Editor” for creating and editing presentation slides for CodEx. CodEx is an Web-based presentation software for lectures on Web programming languages. CodEx GUI Editor was implemented using HTML5/CSS3 technologies and works on the client side. This editor provides GUI interfaces and WYSIWYG functions which allow users to place slide elements graphically. This editor also provides special functions to manage “code box” and “execution box” on CodEx slides. Evaluation experiments showed that this editor worked well and all participants could make slides easily through GUI interfaces. However, usability improvements are needed on the layout change function.
