Visio is a software system for creating structured drawings by non-technical business professionals. This book describes how to customize Visio 5.0 Standard, Technical and Professional versions without programming. The companion CD-ROM contains example files to support the activities in the book. In addition the pack provides 39-day evaluation versions of Visio 5.0 Standard, Technical and Professional, enabling the user to create diagrams from simple flowcharts and organize charts to network diagrams and complex schematics.

1998-11-07 NURBS Not Explained Correctly

On page 9 of "Learn Visio 5.0 For the Advanced User", the author writes: "In NURBS all weights are equal; in NUBS weights can be unequal". In fact, the exact opposite is true. The weights associated with the control points in a NURBS curve will, in general, NOT all be equal to each other; they can, indeed be all different. Moreover, you can think of a NUBS curve as a NURBS curve in which the weights are ALL EQUAL to 1.0. In Visio 5.0, the Freeform tool produces splines that are NUBS curves. The mathematics of spline curves can get rather complex, and even though this book stays away from the mathematical details ( which are not necessary for someone to use spline curves in their drawings ), it is important to keep the terminology straight.