This is the code for the Mandelbrot Set demonstration I did as part of my talk about DisTcl at EuroTcl 2024: https://openacs.org/conf2024/info/ . DisTcl is documented at https://wiki.tcl-lang.org/page/DisTcl . mand_orig.tcl is the original program from https://wiki.tcl-lang.org/page/Mandelbrot . mand.tcl is the same program modified to distribute the compute-intensive part. mand_diff.pdf shows how small those modifications are. mand_server.tcl is the compute-intensive section of the original program, modified slightly to generate vertical slices of the image and return them as gifs, invoked as a DisTcl service with the name "mand". mand_client.tcl is a minimal command-line client for the mand service.