Read the book: «Corona Magazine #354: Juli 2020», page 15

Suitable for smartphones, Android tablets, e-readers (except Kindle) and many programs

Can be opened on almost any device

Can be opened on any computer

Can be opened on any computer

Opens in Adobe Reader

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Suitable for Kindle e-readers and Android apps

Suitable for iOS devices (iPhone, iPad, iMac) and most reading apps

Perfect for iPhone and iPad

Development of FB2 format