Went to an Accessibility SIG meeting and discussed the role of TechDis. Summaries are reported elsewhere.
Glad I changed groups. Joined old friends that I seem to re-meet at these occasions.
The best thing was afterwards having a demo of TiddlyWiki - thank you Alistair!
Now I have a wiki. It's free standing so will park inside the repository but it will also link into CUOnline should it need to go there. (Tested this - OK)
The main disadvantage is that the editor isn't wysiwyg but I think that I should manage to show the basics.
Good travelling home on GNER. Will go via Peterborough in the future.