We access text, pictures, audio, video and interactive graphics from this massive storehouse as if we were pulling books off a shelf or turning on the TV.

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HTML5 promises interactive video and audio and many app-like features, but it delivers them from the Web.

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Some titles are interactive, incorporating video, audio and flash animations.

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Its ability to generate interactive content on the fly that combines text, images, video and audio about millions of topics looks impressive in demos.

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Wine Simplified is made for iPad and iPhone and includes 90 minutes of video tastings and tutorials, dozens of interactive guided tours and infographics, and 240 audio pronunciation guides.

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