The Custom Slides plugin extends the functionality of the core Slides feature by offering more control over the presentation experience. It lets you toggle the visibility of navigation arrows to reduce on-screen distractions and adjust the progress bar height for better visual balance. Lists in presentation mode can be left-aligned for improved readability, maintaining proper spacing for both bulleted and numbered items. The plugin also streamlines navigation by automatically enabling keyboard input when entering Slides mode, so you can use the spacebar and arrow keys immediately without clicking the presentation window. When you exit, it restores your previous editing mode, keeping your workflow intact.