Markdown Presentation Mode/Markdown 演示模式

At the very beginning, I wrote slides in R Markdown environment and export to HTML or PDF, but it is not that convenient. I dropped out after about half a year later.

最开始，我借助 R Markdown 环境来进行 幻灯片 的编写并导出为 HTML 或者 PDF 来进行演示，但这不是很方便。用了半年左右，我最终还是放弃了。

Later I refer to Marp for writing slides and export to PDF for presentation. Impressive is a great PDF file presentation tool. I know it is complex that I have to take both Marp and VNote for Markdown writing and the presentation is caried out off Marp using a third party tool.

再后来，我使用 Marp 来编写幻灯片，导出为 PDF，使用 Impressive 播放 PDF 进行演示，也不是很方便，一来我要使用 VNote 和 Marp 两个工具软件，二来需要离开 Marp 借助第三方工具进行演示。

But there exist some Markdown editors with Presentation Mode just as Haroopad and Yu Writer.

当然了，有些 Markdown 编辑器自带有播放幻灯片演示功能，例如 Haroopad 和 Yu Writer。

I suggest Markdown Presentation Mode to be added. May dear tamlok and VNote fans can help.

希望我们亲爱的 VNote 作者 tamlok 及 VNote 粉可以群策群力，给 VNote 添加一个 Markdown 演示模式。

No files, tests, or entry points are identified. Start by clarifying whether Markdown should be presented directly in VNote or exported first, and define the expected slide workflow; done means a complete presentation mode is specified and implemented for the intended Markdown content.