SUPPORT Q&A - dijit/Calendar settings

I've a form for issues where the user inputs the date the issue happened.

I simply want to tell the calendar that the user may not pick a date greater than today.

https://dojotoolkit.org/reference-guide/1.10/dijit/Calendar.html

How to tell the widget to have a ceiling of today?

How to tell any dojo dijit widgets anything in the context of Aras Innovator Forms?