3dformat documentation not readable online

[Wookey]

The release contains 3dformat.htm, but whilst the main manual is made available to read online at ​http://survex.com/docs.html the 3dformat doc does not appear to be, which means you can't easily send someone a URL pointing to the docs. People would be a lot more likely to find the docs if they were discoverable in this way.

[Olly Betts]

Thanks, but already noted as #36.