Here is a Magma program for someone who wants to play with Rainbow. This file is a toy Magma Rainbow program, which can run on Magma or the online magma calculator http://magma.maths.usyd.edu.au/calc/ In the calculator, one has to copy and paste the program into the window of the calculator and then press the submit button. You can change anything in the program, in particular, the parameters for Rainbow at the beginning of the code which can be modified as you want. The three number in param...