Smart Editor

WYSIWYG(What You See Is What You Get.) HTML5 Editor.
Plugin which edits a Page directly from a preview screen.

official site.

日本語:
本当のWYSIWYGエディターです。
だって、プレビュー画面で編集しているんだもん。
詳しくは
official site.

Arbitrary section

Since there is no contribution, it cannot develop at all. (TT)