[gianni_1]

Originally Posted by BetterRed

Try this ==>> Configuring and using Calibre's built in Open With - MobileRead Forums

BR

Hello BR,
thanks for your answer.
I tried following the instructions you indicated, it works with some files and doesn't work with others of the same type. A curiosity: if I told Calibre with which external program it should open a type of file, what need would I have in defining shortcuts?