'''Note - Arjen's page is editable'''

Just a short description of my professional activities and background (I felt obliged having participated on the newsgroup and the Wiki after several months):

   * By education I am a physical engineer (a title not well known in Anglosaxon countries, but that is the translation from the Dutch).

   * I have been working at WL | Delft Hydraulics for a good many years now, first as a project engineer working on water quality modelling, later on as a computer scientist (well, sort of), working on user-interfaces and tools for our consulting activities. 

   * I "discovered" Tcl/Tk when reading a famous book by Boris Beizer ([BOOK Software Testing Techniques]), and later on my attention was drawn to it again in connection to a testing tool (automated [GUI] [testing]). It was simply the tool I had been looking for. For all kinds of purposes: testing, manipulating files, boring stuff that I used to do with UNIX shell scripts or DOS batch files and so on. 

   * My interests: [FORTRAN] as a computational language, Tcl as a language for almost anything else and even a bit of numerics if I can manage it, testing techniques (although I should listen to my own advocacy at times :-).

Email: mailto:Arjen.Markus@wldelft.nl
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I have written several papers relating to Tcl:

    * "Generating test programs using TestMake" - presented at the Second European Tcl/Tk User Meeting
    * "Doing mathematics with Tcl" - presented at the Third European Tcl/Tk User Meeting
    * "Combining FORTRAN and scripting languages" - published in the ACM FORTRAN Forum [http://www.fortran.com/fortran/acm_ff.html], Volume 21, Number 3, December 2002.
    * "Creative use of the text widget" - presented at the Fourth European Tcl/Tk User Meeting

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Current mega pet project: The young programmers' project, intended to produce a booklet or book for young people or unexperienced adults to learn programming [http://tcl.projectforum.com/young]
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Just to remind myself of the pages I have initiated (in desperate need of an update ...):

   * [A little business logic]
   * [A little graphical pointer]
   * [a little hail storm]
   * [A poor mans GUI]
   * [A simple memory game]
   * [A simple slideshow]
   * [A simple version of Eliza]
   * [Adding, multiplying and composing functions]
   * [Agents, sprites and young programmers]
   * [Angles and directions]
   * [Automatic differentiation]
   * [calling FORTRAN routines in a DLL]
   * [Cellular automata]
   * [Chatroom wisdom]
   * [Clock and daylight saving time corrections]
   * [Colouring graphs]
   * [Combining FORTRAN and Tcl in one program]
   * [Complex data structures]
   * [Composing Curves]
   * [Computers and real numbers]
   * [Constructing curves]
   * [Covering a four-dimensional grid]
   * [Creating an animated display, part 2]
   * [Creating an animated display]
   * [Creating your own expr command]
   * [Critcl goes FORTRAN]
   * [Daddy, how does a computer work]
   * [Dangerous constructs]
   * [Differentiation and steepest-descent]
   * [Dijkstra's guarded commands]
   * [Discrete Fourier Transform]
   * [Displaying tables]
   * [Distributing a series of tasks]
   * [Dutch Tcl Users Group]
   * [exec and error information]
   * [Experiments with matrix operations]
   * [Fiddling with Fourier series]
   * [finding the shortest paths in a graph]
   * [Finite state machines]
   * [Floating-point formatting]
   * [Garbage collection]
   * [Generating random strings]
   * [Generating random tests]
   * [Generic compiling and linking via build tools]
   * [Genetic Algorithms]
   * [Geometry]
   * [Group theory and permutations]
   * [GUI for an existing program]
   * [How to make a Tcl application - part three]
   * [How to make a Tcl application - part two]
   * [How to make a Tcl application]
   * [Ideas for a numerical analysis package]
   * [Integral equations]
   * [Looking at LISP's SERIES extension]
   * [Managing FORTRAN programs]
   * [Mandelbrot and Julia sets]
   * [Manipulating infinite sets in Tcl]
   * [Manipulating sets in Tcl]
   * [Markov Matrices]
   * [Mathematical workbench]
   * [Moving dots]
   * [Nested Radical Constant]
   * [Non-ASCII characters]
   * [On mathematical notation]
   * [Parser using recursive descent]
   * [Partial Differential Equations - performance benchmarks]
   * [Pascal's triangle]
   * [Passing arrays of data]
   * [Performance of string reversing algorithms]
   * [Physical empirical formulae]
   * [Plots and charts]
   * [Polynomial fitting]
   * [Polynoms and power series]
   * [Producing a fractal convex solid]
   * [quality of source code]
   * [Quick-n-dirty debugger]
   * [Raster operations on the canvas]
   * [Reading GIS shape files]
   * [Recursive functions]
   * [Robust environment variables on Windows]
   * [Rough sets]
   * [Setup of a Tk tutorial]
   * [Simple data plotting example]
   * [Simple method for computing mathematical limits]
   * [Simple zooming and scaling in a canvas]
   * [Simulating a server system]
   * [Slicing arrays]
   * [Small tool for the after command]
   * [Splitting a string on arbitrary substrings]
   * [Starkit with Iwidgets]
   * [Strange figures]
   * [Super-exponential growth in text manipulation]
   * [Surreal numbers]
   * [Taking the Nth power]
   * [Three-dimensional shapes]
   * [Traversing listboxes via the keyboard]
   * [Vector spaces]
   * [Writing PPM files]
   * [Manipulating blocks of data]
   * [FEMTOL]









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