What is the best mime-type and extension to use when exporting tab delimited?
For tab-delimited files, http://www.rfc-editor.org/rfc/rfc4180.txt mentions ‘text/tab-separated-values’. That format is (sparsely) described at http://www.iana.org/assignments/media-types/text/tab-separated-values. More info can be found at : http://www.cs.tut.fi/~jkorpela/TSV.html I hope this helps?