Add usage note
@@ -1741,6 +1741,7 @@ Turbine_Bcast_Cmd(ClientData cdata, Tcl_Interp *interp,
int objc, Tcl_Obj *const objv[])
{
// Unpack
+ // ARGS: comm root variable_name
TCL_ARGS(4);
int rc;
Tcl_WideInt comm_int;
