I'm forced to open an occasional PowerPoint .ppt or .pptx presentation using Keynote, in order to 'read' it on screen, Save it for future reference (usually by printing it to PDF), or maybe extract some images from it. This doesn't happen often enough for me to develop a lot of expertise in Keynote, so I'm asking if anyone can recommend a tutorial or share any helpful hints on how to copy with the occasional translation glitches in doing this. The document warning flags thrown up by Keynote are primarily missing font warnings, mostly for font names beginning with "C": Cambria, Constantia, Calibri, Š. Any suggestion on what replacement fonts are the best choices for these? Any easy way to add these fonts to my system (which is currently 10.4.11) so Keynote can use them? Thanks for any advice.