Microsoft Watch's Mary Jo Foley breaks the news on Microsoft's big push into what was publishing's darling, Adobe's PDF standard.

Adobe's PDF document-distribution format may seem entrenched among computing consumers, but that isn't stopping Microsoft from trying to throw its weight behind a competing publishing venture.

At its Tablet PC launch here on Thursday, Microsoft provided its first public glimpse of its e-publishing technology, code-named ePeriodicals.

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