# [Constants](@id lib-constants)

```@docs
Core.nothing
Base.PROGRAM_FILE
Base.ARGS
Base.C_NULL
Base.VERSION
Base.DEPOT_PATH
Base.LOAD_PATH
Base.Sys.BINDIR
Base.Sys.CPU_THREADS
Base.Sys.EFFECTIVE_CPU_THREADS
Base.Sys.WORD_SIZE
Base.Sys.KERNEL
Base.Sys.ARCH
Base.Sys.MACHINE
```

See also:

  * [`stdin`](@ref)
  * [`stdout`](@ref)
  * [`stderr`](@ref)
  * [`ENV`](@ref)
  * [`ENDIAN_BOM`](@ref)
