Install ddd-doc by entering the following commands in the terminal:
sudo apt update sudo apt install ddd-doc
Description:
Additional documentation for the Data Display Debugger
The "Debugging with DDD" and "Writing DDD Themes" User's Guide and Reference Manual in PDF format ("info" versions are included in the "ddd" package itself). . The technical report "DDD---A Free Graphical Front-End for UNIX Debuggers" in PostScript format.
Homepage: http://www.gnu.org/software/ddd/
Version: 1:3.3.12-5.1build2
Section: universe/doc