Slides are laid out for display in a two-dimensional space which you can choose to navigate in real time in any direction. Slide text is written in a markup language using a normal text editor. Image placement is still controlled in a WYSIWYG manner using the program itself (which is quicker than pure markup language spacing commands). Slides can be any size and automatically resize to fit their contents; you can view multiple small ones at once or part of very large ones, so logical units don't have to be stretched to screen size. You can select two slides from anywhere in the talk and view them side-by-side. You can zoom out to rearrange slides or get an overview of the talk. Each slide acts like a folding text editor, with definable blocks which can be collapsed and expanded during the talk. ou can define hyperlinks between different slides, which are spatially animated.