Install cmuscheme48-el by entering the following commands in the terminal:
sudo apt update sudo apt install cmuscheme48-el
Emacs mode specialized for Scheme48
Scheme48 associates loaded code with specific files. This extension to the normal scheme-mode of Emacs uses this facility to associated data sent to a inferior Scheme process with the correct file. Scheme 48 will automatically evaluate the code in the correct package for the file.