Update hintbuilding.md

markdown/hintbuilding.md

@@ -1,2 +1,18 @@
 # HintBuilding Extensions
-RueI provides extensions to [StringBuilder](https://learn.microsoft.com/en-us/dotnet/api/system.text.stringbuilder?view=net-7.0)
+RueI provides extensions to [StringBuilder](https://learn.microsoft.com/en-us/dotnet/api/system.text.stringbuilder?view=net-7.0) through the [HintBuilding](api/extensions/hintbuilding/hintbuilding.html) class. this provides a large number of methods on StringBuilder to make adding tags easier and less error-prone.
+
+to use this, you first bring the class into scope:
+```csharp
+using RueI.Extensions.HintBuilding;
+```
+then, you can use it like so:
+btw im gonna waste time to make a dumb little stringbuilder extensions thing so you can do shit like 
+```csharp
+StringBuilder sb = new()
+  .SetColor(255, 0, 0)
+  .SetSize(1.5, MeasurementStyle.Ems)
+  .Append("hello!")
+  .CloseColor()
+  .CloseSize();
+```
+since all of the methods return the original StringBuilder, you can chain them easily.