1. In a programmable, numerically path controlled processing device of the type comprising a multiple axis controller for controlling the processing device along at least two axes; a display unit coupled to the controller; means, included in the controller, for displaying on the display unit a first set of dialog texts suitable for multiple axis path programming; and a keyboard input unit comprising input key means for the entry of digital programming data to the controller, the improvement comprising: means, included in the controller, for displaying on the display unit a second, abbreviated set of dialog texts, simpler than the first set of dialog texts, each of said second set of dialog texts suitable for single axis, axially parallel interval programming of paths parallel to a respective one of the at least two axes, but unsuitable for multiple axis path programming; and means for selectively activating a selected one of the means for displaying the first set of dialog texts and the means for displaying the second set of dialog texts.