Further clicks on the image will result in the CGI script seeking to and reading the appropriate value from that file, instead of contacting a rendering server to generate a new view. The seek location is given by the clicked-on x and y position. Note that the configuration file typically associated with image-mapping is not used. With a configuration file, the x and y position are used as an index into a predefined region, and the exact position is not available to the script. The frog dissection kit is designed to be readily accessible.
Consideration is given to the different capabilities of browsers.
Also, there is an option to generate smaller images for browsers connected over low-bandwidth networks. The spatial relationships of organs to each other are easily seen, in combinations that would be physically unstable in a real dissection. Possible extensions that would make the simulation more complete are a virtual cutting tool and the use of a higher-resolution data set. Stereoscopic imaging could be combined with a head-mounted display to give the appearance of wandering about through the frog's organs. Only one or a few frogs need to be sacrificed, and students who are uncomfortable with cutting up an animal have an option to learn frog anatomy through virtual dissection.