HTML 4.01 SpecificationW3C Recommendation 24 December 1999 superseded 27 March 2018 This version: https://www.w3.org/TR/2018/SPSD-html401-20180327/ Latest version of HTML 4.01: http://www.w3.org/TR/html401 Latest version of HTML 4: http://www.w3.org/TR/html4 Latest version of HTML: https://www.w3.org/TR/html/ Previous version of HTML 4.01: http://www.w3.org/TR/1999/REC-html401-19991224 Previous HTML 4 Recommendation: ht
The W3C Markup Validation Service
