The text format is based on Github Flavored Markdown.
Marp uses the horizontal ruler to create multi-page slides. A --- between empty lines splits the presentation into slides. This format is similar to Deckset.
Marp’s Markdown has extended directives to affect slides. Insert HTML comment as <!-- {directive_name}: {value} -->
[3] Marp(Markdown Presentaiton)の文法まとめ - Qiita ( ()) <http://qiita.com/pocket8137/items/27ede821e59c12a1b222>