PlantUML and Mermaid 画图语言／作图语法, especially in Markdown .md files

TL;NR # 安装 vscode plugins: Markdown Plantuml Preview - by myml . .. （ps: v1.121 2026-05-20 之前，预览 mermaid 需要一个插件（Mermaid Preview - by Mermaid OSS）但是 vscode 现在自带 mermaid 支持） 创建 .md , 内容来自 k-means.md · SinoSolomon/diagram-demo - Gitee.com 》 “一键复制”. vscode 中 Ctrl+Shift+P 》”在侧边栏打开预览“： 预览效果： README.md · SinoSolomon/diagram-demo - Gitee.com. MERMAID # Simple to use, not for professional usages. Selected Plugins/Tools # VSCode: Live preview in Visual Studio VSCode plugins: 【suggested! ...