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BetterRed well thank you again for all your help
I know only one viewer is the one that is delivered with Caliber. I had not heard of this ongoing development.
Your links also help me because I just registered and I do not know at all what model of forum, I am a little lost and discovers every day.
So I followed your advice and if the subject interests you also it is there:
Https://www.mobileread.com/forums/sh...34#post3486534
For PDF, I also had PDF-XChange Viewer PRO version 2.5.201, but naively I had not considered that it had these possibilities and could work with Caliber. Moreover all my text books are in Epub and only books with illustrations are in PDF.
It is really great And I had never clicked on his shortcuts !!!(Blinded by Adobe)
I think it is easy to transform the Epub into PDF with Caliber, I will try it, meanwhile,
Thanks to you I have changed on my machine the priority of the PDF and give it to XChange!
I wanted to tell you that I understand your English much better than when I exchange (about computer and internet programming) with Americans, although often belonging to technical-commercial services of big companies, I imagine your English Is more the one I learned at the French High School?
Thanks again BetterRed