tw.forms is a set of ToscaWidgets for building HTML forms. It allows a web developer to quickly develop forms that support server-side validation, and report clear error messages to users. Validation is done using FormEncode, a validation library. As well as widgets for the basic HTML form fields, tw.forms includes some more advanced widgets, such as tw.forms.calendars.CalendarDatePicker.
To get started, read Building a Form with tw.forms. For more detailed reference documentation, read the Module Reference.