wadadanet

WYSIWYG(What You See Is What You Get.) HTML5 Editor. 
Plugin which edits a Page directly from a preview screen.
<iframe loading="lazy" class="youtube-player" width="750" height="422" src="https://www.youtube.com/embed/VVfohIyBaww?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en-US&autohide=2&wmode=transparent" allowfullscreen="true" style="border:0;" sandbox="allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox"></iframe>
<a href="http://www.coffee-break-designs.com/plugin/word-press/smart-editor/" title="Official site" rel="nofollow ugc">official site</a>.
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 
<a href="http://www.coffee-break-designs.com/plugin/word-press/smart-editor/" title="Official site" rel="nofollow ugc">official site</a>.
<h3>Arbitrary section</h3>
Since there is no contribution, it cannot develop at all. (TT)

Smart Editor

WYSIWYG(What You See Is What You Get.) HTML5 Editor,

Steve Grunwell

<a href="https://codex.wordpress.org/Excerpt" rel="nofollow ugc">WordPress post excerpts</a> can be a great way to hand-craft the summary of your content. Unfortunately, writing post excerpts isn’t as nice of an experience as what you find elsewhere in WordPress. Want to include links in your excerpts, or bold some text? Hopefully you know some HTML!
Advanced Post Excerpts is designed to change that, by giving your editors an easy, intuitive interface for writing great post excerpts.
For complete details and/or to contribute to ongoing development, please <a href="https://github.com/stevegrunwell/advanced-post-excerpt" rel="nofollow ugc">visit this project on GitHub</a>.

Advanced Post Excerpt

Replace the default Post Excerpt meta box with a superior editing experience.

Smart Editor vs Advanced Post Excerpt