diff --git a/Available-C#-and-.NET-features.md b/Available-C#-and-.NET-features.md
index 2112c11..3807a0d 100644
--- a/Available-C#-and-.NET-features.md
+++ b/Available-C#-and-.NET-features.md
@@ -77,6 +77,7 @@ static [local methods](https://docs.microsoft.com/en-us/dotnet/csharp/programmin
 `field` [attribute target](https://docs.microsoft.com/en-us/dotnet/csharp/programming-guide/concepts/attributes/#attribute-targets) for auto-prop backing field | ✔️ | ✔️ | discouraged (surely this can only be used for stupid)
 [`stackalloc`](https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/operators/stackalloc) with array intialiser | ✔️ | ✔️ | encouraged
 ^ C# 7.3 ^ | 🔵 `net48` | 🟢 `ns2.0` | ---
+[`Span`](https://docs.microsoft.com/en-us/dotnet/standard/memory-and-spans/) and co. | ⭕ | ⭕ | allowed
 [`ref struct`](https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/builtin-types/struct#ref-struct) (stack-bound) | ✔️ | ✔️ | allowed
 [`readonly struct`](https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/builtin-types/struct#readonly-struct) and `in` parameters | ✔️ | ✔️ | encouraged
 ^ C# 7.2 ^ | 🔵 `net48` | 🟢 `ns2.0` | ---