# Concept
These are the concepts that make xplr probably the most hackable terminal file
explorer.
- [Key Bindings][1]
- [Node Type][2]
- [Layout][3]
- [Mode][4]
- [Message][5]
- [Borders][6]
- [Style][7]
- [Sorting][8]
- [Filtering][9]
- [Column Renderer][10]
- [Lua Function Calls][11]
- [Environment Variables and Pipes][12]
[1]: key-bindings.md
[2]: node-type.md
[3]: layout.md
[4]: mode.md
[5]: message.md
[6]: borders.md
[7]: style.md
[8]: sorting.md
[9]: filtering.md
[10]: column-renderer.md
[11]: lua-function-calls.md
[12]: environment-variables-and-pipes.md