Install gsequencer-doc by entering the following commands in the terminal:
sudo apt update sudo apt install gsequencer-doc
Description:
documentation for Advanced Gtk+ Sequencer
Advanced GTK+ Sequencer is intended to be used for music composition. . This package contains the user manual that explains the GUI in html format of Advanced Gtk+ Sequencer.
Homepage: https://nongnu.org/gsequencer
Version: 1.4.24-1ubuntu2
Section: universe/doc