Elements that are to be copied to the model file are held in a draw list. Elements may be specified explicitly or by using a PML expression to define selection criteria. Refer to Software Customisation Reference Manual for further information about PML.

Only significant elements, such as BRAN, EQUI, SUBS, HANG, STRU, PTRA, etc., may be added to or removed from the draw list. If the user tries to add or remove an element below a significant element (that is, a primitive), the whole of its owning significant element is added to or removed from the draw list.

Colours to be used to display the different element types can be specified explicitly or by using the Autocolour selection rules - refer to AUTOCOLOUR command in Selecting Graphics Colours Automatically.