playground

**bold** `the code` this is inside a div

test if github supports html tags

<div class="callout callout-info" markdown="1">

hyper link to current folder docs-suggestions.md(./);

hyper link to current folder docs-suggestions.md;

header	header
built-in fields	内置字段

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├── Build
│   ├── Intermediates
│   │   ├── ArchiveIntermediates
│   │   │   └── LeanTicket
│   │   │   │   ├── BuildProductsPath
│   │   │   │   │   └── Release-iphoneos
│   │   │   │   │   ├── LeanTicket.app -> /Users/fengjunwen/Library/Developer/Xcode/DerivedData/LeanTicket-dkvwhbscbgyeoldhsxxzmorfqmyf/Build/Intermediates/ArchiveIntermediates/LeanTicket/InstallationBuildProductsLocation/Applications/LeanTicket.app
│   │   │   │   │   └── LeanTicket.app.dSYM
│   │   │   │   │   │   └── Contents
│   │   │   │   │   │   ├── Info.plist
│   │   │   │   │   │   └── Resources
│   │   │   │   │   │   │   └── DWARF
│   │   │   │   │   │   │   │   └── LeanTicket

├── Build
    ├── Intermediates
        ├── ArchiveIntermediates
            └── LeanTicket
                ├── BuildProductsPath
                    └── Release-iphoneos
                    ├── LeanTicket.app -> /Users/fengjunwen/Library/Developer/Xcode/DerivedData/LeanTicket-dkvwhbscbgyeoldhsxxzmorfqmyf/Build/Intermediates/ArchiveIntermediates/LeanTicket/InstallationBuildProductsLocation/Applications/LeanTicket.app
                    └── LeanTicket.app.dSYM
                        └── Contents
                        ├── Info.plist
                        └── Resources
                            └── DWARF
                                └── LeanTicket