It was puzzling that it showed "LaTeX: [empty small box]". I was waiting for something to load in that box before I realized that it would be replaced by the t

It was puzzling that it showed "LaTeX: [empty small box]". I was waiting for something to load in that box before I realized that it would be replaced by the transormed output from whatever I typed above. I don't know much about web design but for stuff like this I usually see the text box filled with an example input and the resulting output is displayed along with it.