I've created a list of items, each with a check box, and I'm trying to create a form that can take all of the items with their boxes marked (checked) and output them to a list to be printed or emailed. 

Is this possible and if so how? TIA

With a CheckBoxList in Form Master when the form is submitted, any checkboxes in the list which are checked result in a Comma Separated list which is stored in either the default Form Master data store (XML fragments in a table) of in a user defined table. Either way it is still a CSV list of the values which were checked.

Your requirements are a but unclear to me, but this is how Form Master handles the CheckBoxList control.