Package coolreader

Cross platform open source e-book reader

https://sourceforge.net/projects/crengine

CoolReader is fast and small cross-platform XML/CSS based eBook reader for
desktops and handheld devices. Supported formats: FB2, TXT, RTF, DOC, TCR,
HTML, EPUB, CHM, PDB, MOBI.

General Commands
Command Description
cr3 program to view e-books (epub, fb2, html, txt, rtf...)