"before we detail this [...] we address the following" except it doesn't

version: Magnesium
page: getting-started-guide/installing_opendaylight

In the installation guide there seems to be a missing reference to another article or a missing section on the same article:

Before detailing the instructions for these, we address the following: Java Runtime Environment (JRE) and operating system information Target environment Known issues and limitations

 
None of those articles seems to exist anymore. The release notes do detail which version of JRE is required.