What would be really useful for quick work, etc, would be a sort of 'CAD' in which the 'D' stands for diagram. This would permit such things as: -constructing cones and prisms over arbitrary parts of a diagram; -adjusting highly nonplanar diagrams to avoid accidental co- lineations; -handling such things as curved arrows, etc, which could be very difficult to specify using coordinates. What has this got to do with LaTeX? Ideally, such a program would put out, not a bitmap, but a LaTeX or similar file that can be included in a paper. [In a perfect world, the diagram editor should pop up during the TeX editing session as required. Most nonDos OS's permit this, and even the DOS world is beginning to be able to do such wild & crazy things]. Now, a graphic interface may make various symbols (such as curved arrows) practical that are not easy to use by drawing a sketch on paper and typing in eyeballed coordinates. Perhaps any such diagram element that would be nice to use, even if not practical for 'hand entry', shpuld be considered for inclusion. A similar situation occurs in some ray-tracing programs, which have some primitive shapes (spheres, ellipsoids, cones...) intended for hand entry, and some (Bezier patches, Phong triangles) with many parameters that are in- tended to be entered via software tools. -Robert Dawson +++++++++++++++++++++++++++++++++++++++++++++++++++++