In making a presentation from a PDF file using a Mac or PC, you can\nalmost always move forward and backward through the slides (aka document\npages) using the left and right Arrow keys.\n\nBut is there a way to step forward and back through _Layers_ on a single\nslide using Arrow keys, or any other designated keys?\n\nThat is, suppose there's a situation where you want to start with a\nmaster slide having a background graphic and then add 4 or 5 additional\ngraphic elements to it in sequence.\n\nDoing this by creating a single slide/page having a sequence of 4 or 5\nseparate Layers can be more convenient that using the same number of\nsuccessive slides. [Reduced file space, and only have to edit the one\nmaster slide if you change the background.]\n\nYou can then step through this sequence in a presentation by creating\nmouse-clickable Links (Buttons) on the master slide. But when you're at\na podium, clicking keyboard keys can be a lot easier than using a mouse\n-\- especially on a darkened stage or when using an unfamiliar computer.\n\nI haven't found any way to create keystroke-activated Links in PDF\ndocuments -\- at least, not using Adobe Acrobat or Adobe Reader. Do such\nexist?