code: function(prezContents, cb) {
        var slideChunksPreTpl = prezContents.toString().split(slideBreakAt);
        _.forEach(slideChunksPreTpl, function(chunk) {
          opts.slides.push({
            preHtml: chunk,
            indented: opts.slides.length && isIndented(chunk)
          });
        });
        cb(null, opts);
      }
docs: Split the prez markup into slides