Update documentation for changing CoreLib (#21201)

[platform/upstream/coreclr.git] / Documentation / project-docs / contributing.md

diff --git a/Documentation/project-docs/contributing.md b/Documentation/project-docs/contributing.md
index 12de014..d18a79d 100644 (file)
--- a/Documentation/project-docs/contributing.md
+++ b/Documentation/project-docs/contributing.md
@@ -61,15 +61,10 @@ Managed Code Compatibility
 
 Contributions must maintain [API signature](https://github.com/dotnet/corefx/blob/master/Documentation/coding-guidelines/breaking-changes.md#bucket-1-public-contract) and behavioral compatibility. Contributions that include [breaking changes](https://github.com/dotnet/corefx/blob/master/Documentation/coding-guidelines/breaking-changes.md) will be rejected. Please file an issue to discuss your idea or change if you believe that it may affect managed code compatibility.
 
-Contributing to mscorlib library
---------------------------------
+Contributing to System.Private.CoreLib library
+----------------------------------------------
 
-Most managed code changes should be made in the [CoreFX](https://github.com/dotnet/corefx) repo. We have moved and are continuing to move many mscorlib types to CoreFX. Please use the following general rule-of-thumb for choosing the right repo to make your change (start by creating an issue):
-
-- The type or concept doesn't yet exist in .NET Core -> choose CoreFX.
-- The type exists in both CoreCLR and CoreFX repo -> choose CoreFX.
-- The type exists in CoreCLR only -> choose CoreCLR.
-- In doubt -> choose CoreFX.
+Most changes in managed libraries should be made in the [CoreFX](https://github.com/dotnet/corefx) repo. The CoreCLR repo contains implementation for the [System.Private.CoreLib.dll](https://github.com/dotnet/coreclr/tree/master/src/System.Private.CoreLib) library. Publicly visible changes in this library require [staging](changing-corelib.md) over the two repos.
 
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