A method of programming processing operations, e.g. printing, on an ordered set of objects, e.g. the pages of a document, the objects being characterizable according to a plurality of different properties defining, or at least relevant for, the processing. The method includes displaying the objects of the set in a one-dimensional ordered object list and at least two spatially related and parallelly disposed property lists each related to a single object property and indicating values of that property in association with the respective objects in the object list. A user may select an object or a group of objects in any of the lists and select a property value therefor, thereby programming the processing of the objects.