van Liere, R.ten Hagen, P. J. W.2014-10-212014-10-2119871467-8659https://doi.org/10.1111/j.1467-8659.1987.tb00564.xThe logical input device model, as is adopted in the standardized graphics package GKS, has been an accepted basis for producing device-independent graphics systems. However, when used in highly interactive graphical applications, the logical input device model does not provide sufficient support for a number of fundamental issues inherent to interaction. This paper reopens a discussion which questions the functionality provided by the logical input device model when brought in conjunction with interaction. In particular, the logical input device model does not support the notion of input/output symmetry.CR Categories: 1.3.4 [Computer graphics]: Graphics utilities- graphics packages- 1.3.6 [Computer graphics]: Methodology and techniques- device independence, interaction techniques10.1111/j.1467-8659.1987.tb00564.x349-357