On Fri, 22 Jun 2018 15:53:51 +0000, Seymour J Metz wrote:

>A TAB is a skip to the beginning of the next unprotected field, with 
>wrap-around. It does not start an unprotected field.
> 
Notoriously, IBM is reported to have obtained a patent on that behavior.

But numerous web pages incorporate that behavior.

Had the patent expired?

Did IBM choose not to defend it?

Or was the patent so specific as not to be applicable to web pages?

-- gil

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