cafeobj-mode software package provides Emacs major mode for editing CafeOBJ source code, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install cafeobj-mode
cafeobj-mode is installed in your system.
Make ensure the cafeobj-mode package were installed using the commands given below,
$ sudo dpkg-query -l | grep cafeobj-mode *
You will get with cafeobj-mode package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Science |
| Package | cafeobj-mode |
| Version | 1.5.5-1 |
| Description | Emacs major mode for editing CafeOBJ source code |
| Sub Section | Science |