Venkat V.S.S. Sastry, Ph.D., is a lecturer in scientific computing at RMCS, Cranfield University, Shrivenham, United Kingdom where he conducts of extensive commercial and academic short courses on programming using Fortran 90, C, and Tcl/Tk. He is coauthor of the popular Internet Tcl/Tk resource, Tcl/Tk Cookbook.
Lakshmi Sastry is principal applications designer and developer, Advanced Interactive Systems Group, Rutherford Appleton Library, Oxfordshire, United Kingdom. She has been the secretary of the UK Advisory Group on Computer Graphics and is the coauthor of the Web-based Tcl/Tk Cookbook.