Via the documents, we learn of a secret meeting held by the Clinton campaign for key reporters.
Glenn Greenwald of The Intercept explains:
The Clinton campaign likes to use glitzy, intimate, completely off-the-record parties between top campaign aides and leading media personalities. One of the most elaborately planned get-togethers was described in an April, 2015, memo — produced, according to the document metadata, by deputy press secretary Jesse Ferguson — to take place shortly before Clinton’s official announcement of her candidacy. The event was an April 10 cocktail party for leading news figures and top-level Clinton staff at the Upper East Side home of Clinton strategist Joel Benenson, a fully-off-the-record gathering designed to impart the campaign’s messaging: