http://tapestry.apache.org/5.3/apidocs/org/apache/tapestry5/corelib/components/Checkbox.html
http://jumpstart.doublenegative.com.au/jumpstart/examples/input/mixedvalidation https://tapestry.apache.org/forms-and-validation.html#FormsandValidation-TrackingValidationErrors ==== Hi All, I need to implement a registration form where the user has to accept the terms & conditions of the site by ticking a checkbox. I was wondering somebody has come across a tapestry extension that does something like this. I would say that a custom validator could solve this. Thanks and regards, Balazs