1The nonstandard stuff could not be found in in the first pubslished versions
2of the program. The first version I am aware of, is a program called   0126136
3SUGtar published at the Sun User Group meeting in december 1987, a different
4publishing of the same program which has been originally written by
5John Gilmore was called PDtar. In 1987 PDtar/SUGtar was implementing a true
6subset of the 1987 POSIX-1003 draft (missing only the long name splitting).
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8FSF people then later added t_atime... making GNU tar non POSIX compliant.
9When FSF added the sparse file handling stuff, this was done in a way that
10even violates any tar document available since the late 1970's.
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12GNU tar is not tar...
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