How to change help language in SVN on Windows?

Question

How to change the language of commands' documentation under Windows, printed by following command: svn help checkout

Answer 1

Use the LANG environment variable

set LANG=en_US

Answer 2

I was using IntelliJ and couldn't set an environment variable. So I deleted the de folder from Program Files\SlikSvn\Share\Locale and the client fell back to using English.