diff --git a/Documentation/dev-plugins.txt b/Documentation/dev-plugins.txt
index 7da501a8b4..f2ff1c2943 100644
--- a/Documentation/dev-plugins.txt
+++ b/Documentation/dev-plugins.txt
@@ -2304,6 +2304,10 @@ BranchWebLinks will appear in the branch list in the last column.
 
 FileHistoryWebLinks will appear on the access rights screen.
 
+If a `get*WebLink` implementation returns `null`, the link will be omitted. This
+allows the plugin to selectively "enable" itself on a per-project/branch/file
+basis.
+
 [[lfs-extension]]
 == LFS Storage Plugins