Unfortunately I simply do not have time to answer all the emails I receive about the tube. Instead, please direct questions to the mailing list. There are people there who will be able to help. I receive a copy of everything that is sent to the list, and I will send a response if I am able to help.
There is no feedback form on this site, but it is easy to email me. I am grateful for any comments, critiscisms or suggestions. I would also be very pleased to receive any contributions of additional material to include on the site.
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