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@@ -1,3 +1,125 @@
-# EnumX
+# EnumX.jl
 
-`Base.@enum`s protected by a module scope.
+This is what I wish [`Base.@enum`][at-enum] was.
+
+## Usage
+
+EnumX exports the macro `@enumx`, which works similarly to `Base.@enum`, but with
+some improvements.
+
+The main drawback of `Base.@enum` is that the names for instances
+are *not* scoped. This means, for example, that it is inconvenient to use "common" names
+for enum instances, and it is impossible to have multiple enums with the same instance
+names.
+
+`EnumX.@enumx` solves these limitations by putting everything behind a module scope such
+that instances are hidden and instead accessed using dot-syntax:
+
+```julia
+julia> using EnumX
+
+julia> @enumx Fruit Apple Banana
+
+julia> Fruit.Apple
+Fruit.Apple = 0
+
+julia> Fruit.Banana
+Fruit.Banana = 1
+```
+
+`Fruit` is a module -- the actual enum type is defined as `Fruit.Type`:
+
+```julia
+julia> Fruit.Type
+Enum type Fruit.Type <: Enum{Int32} with 2 instances:
+ Fruit.Apple  = 0
+ Fruit.Banana = 1
+
+julia> Fruit.Type <: Base.Enum
+true
+```
+
+Since the only reserved name in the example above is the module `Fruit` we can create
+another enum with overlapping instance names (this would not be possible with `Base.@enum`):
+
+```julia
+julia> @enumx YellowFruits Banana Lemon
+
+julia> YellowFruits.Banana
+YellowFruits.Banana = 0
+```
+
+`@enumx` also allows for duplicate values:
+
+```julia
+julia> Fruit.Type
+Enum type Fruit.Type <: Enum{Int32} with 2 instances:
+ Fruit.Apple  = 1
+ Fruit.Banana = 1
+
+julia> Fruit.Apple
+Fruit.Apple = Fruit.Banana = 1
+
+julia> Fruit.Banana
+Fruit.Apple = Fruit.Banana = 1
+```
+
+`@enumx` also lets you use previous enum names for value initialization:
+```julia
+julia> @enumx Fruit Apple Banana Orange=Apple
+
+julia> Fruit.Type
+Enum type Fruit.Type <: Enum{Int32} with 3 instances:
+ Fruit.Apple  = 0
+ Fruit.Banana = 1
+ Fruit.Orange = 0
+```
+
+Other than that, functionality should be comparable to `Base.@enum`:
+
+ - Base type specification (defaults to `Int32`):
+   ```julia
+   julia> @enumx Fruit::UInt8 Apple Banana
+
+   julia> typeof(Integer(Fruit.Apple))
+   UInt8
+   ```
+
+ - Specifying values (if not specified, defaults to the value of the previous instance + 1):
+   ```julia
+   julia> @enumx Fruit Apple=4 Banana=(1 + 5) Orange
+
+   julia> Fruit.Type
+   Enum type Fruit.Type <: Enum{Int32} with 3 instances:
+    Fruit.Apple  = 4
+    Fruit.Banana = 6
+    Fruit.Orange = 7
+   ```
+
+ - Definition with `begin`/`end` block:
+   ```julia
+   julia> @enumx Fruit begin
+              Apple
+              Banana
+              Orange
+          end
+   ```
+
+## See also
+
+**Community discussions**
+ - [Encapsulating enum access via dot syntax][discourse-1]
+ - [Can not reuse enum member in different member][discourse-2]
+ - [Solving the drawbacks of `@enum`][discourse-3]
+
+**Related packages**
+ - [CEnum.jl][CEnum]: C-compatible Enums.
+ - [SuperEnum.jl][SuperEnum]: Similar approach as EnumX, but doesn't give you `Base.Enum`s.
+
+
+[at-enum]: https://docs.julialang.org/en/v1/base/base/#Base.Enums.@enum
+[discourse-1]: https://discourse.julialang.org/t/encapsulating-enum-access-via-dot-syntax/11785
+[discourse-2]: https://discourse.julialang.org/t/cannot-reuse-enum-member-in-different-enum/21342
+[discourse-3]: https://discourse.julialang.org/t/solving-the-drawbacks-of-enum/74506
+[CEnum]: https://github.com/JuliaInterop/CEnum.jl
+[SuperEnum]: https://github.com/kindlychung/SuperEnum.jl