diff --git a/packages/core/src/command.ts b/packages/core/src/command.ts
index 0f949779..2235a464 100644
--- a/packages/core/src/command.ts
+++ b/packages/core/src/command.ts
@@ -1,5 +1,7 @@
 import * as os from 'os'
 
+// For internal use, subject to change.
+
 /**
  * Commands
  *