Smarty
From OpenEMR Project Wiki
WARNING
The usage of smarty in new openemr code is officially deprecated. This page is only meant to collect smarty resources, so that other deelopers know what they are doing, when touching smarty code in OpenEMR.
Object useful for Forms
Smarty has been integrated into openemr for form generation functions, and as part of the calendaring system.
library/classes/Controller.class.php
some forms work by using the Controller class (or a descendant) to supply a template, and a series of values for smarty to intersperse within that template.
library/classes/ORDataObject.class.php
The ORDataObject class is meant to be used to model the data contained in a form.