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+Structure
+---
+
+```text
+hackmd/
+├── tmp/            --- temporary files
+├── docs/           --- document files
+├── lib/            --- server libraries
+└── public/         --- client files
+    ├── css/        --- css styles
+    ├── js/         --- js scripts
+    ├── vendor/     --- vendor includes
+    └── views/      --- view templates
+```
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