File: https://github.com/erlware/erlware.org/blob/gh-pages/index.html
Line: 84
The link to Relx is: "http://relx.org"
This might have been OK 7 years ago when this was written, but today it leads to a commercial site of RELX plc, a British corporate group comprising companies that publish scientific, technical and medical material, and legal textbooks; provide decision-making tools; and organise exhibitions. It must be better to update the link to the github page instead.