docbook-ebnf software package provides EBNF module for the XML version of the DocBook DTD, you can install in your Debian 7 (Wheezy) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install docbook-ebnf
docbook-ebnf is installed in your system.
Make ensure the docbook-ebnf package were installed using the commands given below,
$ sudo dpkg-query -l | grep docbook-ebnf *
You will get with docbook-ebnf package name, version, architecture and description in a table
| Distro | Debian 7 wheezy |
| Section | Text Processing |
| Package | docbook-ebnf |
| Version | 1.2~cr1-5.1 |
| Description | EBNF module for the XML version of the DocBook DTD |
| Sub Section | text |