Install libcoin80-doc by entering the following commands in the terminal:
sudo apt update sudo apt install libcoin80-doc
Description:
high-level 3D graphics kit with Open Inventor and VRML97 support
API documentation for the Coin library (the Open Inventor API) in manpage and HTML format.
Homepage: https://bitbucket.org/Coin3D/coin/
Version: 3.1.4~abc9f50+dfsg3-2
Section: universe/doc