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+# Unvirt Command Reference
+
+## File Operations
+
+### Load File
+
+Syntax: `load [deep | shallow] <filepath>`
+
+Description: Load a Virtools composition.
+
+Arguments:
+- `[deep | shallow]`: The stage of loading. 
+  * `shallow` will load to CKStateChunk stage.
+  * `deep` will load to CKObject stage.
+- `<filepath>`: The path to loaded file.
+
+### Unload File
+
+Syntax: `unload`
+
+Description: Release loaded Virtools composition.
+
+### Save File
+
+Syntax: `save <filepath>`
+
+Description: Save the loaded file into a new file.
+
+Arguments:
+- `<filepath>`: The path to saved file.
+
+## List & Search
+
+### Show Header Info
+
+Syntax: `info`
+
+Description: Show the header infomation of loaded Virtools composition.
+
+### List Objects, Managers or Search Result
+
+Syntax: `ls [obj | mgr | search] <page>`
+
+Description: List objects, managers of loaded Virtools composition,
+or the search result of them.
+
+Arguments:
+- `[obj | mgr | search]`: Which one you want to list.
+- `<page>`: The page index. Start with 1.
+
+### Show Object or Manager Data
+
+Syntax: `data [obj | mgr] <index>`
+
+Description: Show the data of specified object or manager.
+
+Arguments:
+- `[obj | mgr]`: Which one you want to show data.
+- `<index>`: The index of object or manager which can be fetched by list command. Start with 0.
+
+### Show State Chunk Data
+
+Syntax: `chunk [obj | mgr] <index>`
+
+Description: Show the specific CKStateChunk data.
+
+Arguments:
+- `[obj | mgr]`: Which one you want to show chunk
+- `<index>`: The index of object or manager which can be fetched by list command. Start with 0.
+
+### Search Objects or Managers
+
+Syntax: `search [obj | mgr] [plain | re] <text>`
+
+Description: Search the name of object or manager= by plain text or regex. 
+Please note that the regex have limited UTF8 support and may cause undefined behavior.
+
+Arguments:
+- `[obj | mgr]`: Which one you want to search.
+- `[plain | re]`: The search mode.
+  * `plain` will search by plain string. It simply check whether name has your given substring.
+  * `re` will do regex search.
+- `<text>`: The plain text or regex to search.
+
+## Display
+
+### Page Item Count
+
+Syntax: `items <count>`
+
+Description: Set up how many items should be listed in one page when using 'ls' command.
+
+Arguments:
+- `<count>`: The count of items you want to show in one page
+
+### Display Style
+
+Syntax: `style [full | simple]`
+
+Description: Change the detail level of shown data in `ls` command.
+
+Arguments:
+- `[full | simple]`: The style of shown content.
+  * `full` will show more detailed information.
+  * `simple` will show less information.
+
+## Environment
+
+### Set Encoding
+
+Syntax: `encoding <enc>`
+
+Description: Set the encoding series for Virtools composition loading ans saving.
+
+Arguments:
+- `<enc>`: CKContext used encoding separated by ','. Support multiple encoding.
+
+### Temp Path
+
+Syntax: `temp <temppath>`
+
+Description: Set the Temp path for CKContext.
+
+Arguments:
+- `<temppath>`: The path to Temp folder
+
+### Data Resource Path
+
+#### Clear Data Resource Path
+
+Syntax: `rsc clear`
+
+Description: Clear all data resources paths.
+
+#### Add Data Resource Path
+
+Syntax: `rsc add <datares>`
+
+Description: Manage data resources paths.
+
+Arguments:
+- `<datares>`: The data resources path.
+
+## System
+
+### Debug Test
+
+Syntax: `test`
+
+Description: Call custom debugging function (only available in Debug mode).
+
+### Show Version
+
+Syntax: `version`
+
+Description: Show the version info about this program.
+
+### Show Help
+
+Syntax: `help`
+
+Description: Output this help page.
+
+### Exit Program
+
+Syntax: `exit`
+
+Description: Exit program.