SEO and w3c standards: Visibility, Timing Control for Script-Based Animat...: "The Web Performance Working Group published three drafts a First Public Working Draft of Page Visibility , which defines a means for sit..."
SEO and w3c standards: Visibility, Timing Control for Script-Based Animat...: "The Web Performance Working Group published three drafts a First Public Working Draft of Page Visibility , which defines a means for sit..."
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