Install libcairo2-doc by entering the following commands in the terminal:
sudo apt update sudo apt install libcairo2-doc
Description:
Documentation for the Cairo Multi-platform 2D graphics library
Cairo is a multi-platform library providing anti-aliased vector-based rendering for multiple target backends. . This package contains the HTML documentation for the Cairo library in /usr/share/gtk-doc/html/cairo/.
Homepage: https://cairographics.org/
Version: 1.15.10-2
Section: libs