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It’s easy to have mistakes creep into your HTML documents, and one of the best free, automated ways to target mistakes and fix them is HTML Tidy . A group of open-source volunteers keeps this program fresh. The program can automatically clean up most types of HTML mistakes you make, but it also alerts you when it has no fix and points to what you need to fix yourself.
How to clean up your HTML
November 4, 2007 I've often thought there is a subtle art to the humble hyperlink , that stalwart building block of hypertext, the stuff that Ted Nelson's Xanadu dream was made of. The word hypertext was coined by Nelson and published in a paper delivered to a national conference of the Association for Computing Machinery in 1965. Adding to his design for a nonsequential writing tool, Nelson proposed a feature called "zippered lists," in which elements in one text would be linked to related or identical elements in other texts.