Install libatkmm-1.6-doc by entering the following commands in the terminal:
sudo apt update sudo apt install libatkmm-1.6-doc
Description:
C++ wrappers for ATK accessibility toolkit (documentation)
Atkmm is a C++ interface for ATK, accessibility toolkit used by Gtk+ library. It provides a familiar interface for C++ programmers to add accessibility features to their applications. . This package contains tutorial, FAQ, and reference documentation.
Homepage: http://www.gtkmm.org/
Version: 2.24.2-3
Section: doc