cl-who software package provides Yet another Lisp markup language, 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 cl-who
cl-who is installed in your system.
Make ensure the cl-who package were installed using the commands given below,
$ sudo dpkg-query -l | grep cl-who *
You will get with cl-who package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Lisp |
| Package | cl-who |
| Version | 1.1.4-1 |
| Description | Yet another Lisp markup language |
| Sub Section | Lisp |