Abstract: Systems and methods are disclosed for user modification of a rule or set of textual rules in plain language the reference instructions in a domain-specific treatment language that is used to generate dental appliance data. In some cases, the user may interact with a graphical user interface to modify a practitioner-specific subset of textural rules. The graphical user interface may allow modification of the practitioner-specific subset of textural rules without prior knowledge of the domain-specific treatment programming language. Each interaction region may cause sections of the predefined treatment preferences to be modified without knowledge of the dental protocol language. The example systems, methods, and/or computer-readable media described herein help with designing treatment plans for orthodontic treatments, including treatment plans based on predefined treatment preferences expressed in a dental protocol language.