Install libocamlgraph-ocaml-doc by entering the following commands in the terminal:
sudo apt update sudo apt install libocamlgraph-ocaml-doc
Description:
documentation for the OCamlgraph library
This package provides the API reference documentation generated by ocamldoc.
Homepage: http://ocamlgraph.lri.fr/
Version: 1.8.6-1build5
Section: universe/doc