Add experimental note.
@@ -29,7 +29,7 @@ func init() {
// Disabled controls if we'll actually emit the traces.
// If this is set to true, traces will be generated but not
// actually sent. This should only be set before any traces
-// are generated
+// are generated. Note: Very Experimental.
var Disabled = false
// Make an unexported `key` type that we use as a String such
