Install cc65-doc by entering the following commands in the terminal:
sudo apt update sudo apt install cc65-doc
Description:
cc65 documentation
cc65 is a complete cross development package for 65(C)02 systems, including a powerful macro assembler, a C compiler, linker, librarian and several other tools. . This package contains the documentation that is also available on the cc65 homepage.
Homepage: http://cc65.github.io/cc65/
Version: 2.16-2
Section: universe/doc