We arent allow to redefine the controls appearance in this version. Just redefine its positions or remove it if needed. This feature planned to next versions.
Thank's a lot
you may use next JS code on your page:
<script> CalendarContext.prototype.todayControl = CalendarView.getControl("XXX", "today"); </script> on your page to set the label you need. ("XXX" in example below)
if you use popup mode - this script should be placed below calendar tag on your page.
Thank you very much for help ilya_shaikovsky...
It seems that the given workaround is no more valid with RF 3.1.3
The following JS put before the rich:calendar tag works:
<script> CalendarView.getControl("XXX", CalendarView.toolButtonAttributes,"today") </script>