How does the i41 CAS work?
The i41 CAS function uses an input text file as a mini notebook, similar to Mathematica. CAS performs the operations specified in the input file called CASIN. Upon completion, the CAS output (CASOUT) is displayed in a dedicated output viewer. In i41, CAS always operates on CASIN and the output is created as CASOUT and they are cleared each time CAS is run. In i41CX+, different input and output files can be specified each time CAS is run. In fact, in i41CX+ it is also possible to use the same file for both input and output as well as to ignore output. The latter is useful when the CAS operations manipulate and place the result(s) in calculator registers (see Q10 for details on how to access calculator registers in the CAS environment) or when only generating plots.
