The "%" character should store the results of last output, but it does not if a semicolon is used (in contrast to what happens in a standard mathematica notebook). This example (and screenshot below) show the problem:
(* output from both lines is seen *)
Sin[x]^3+Cos[y]^2
TrigReduce[%]
(* see no out put here, but should see output from second line *)
Sin[x]^3+Cos[y]^2;
TrigReduce[]
The "%" character should store the results of last output, but it does not if a semicolon is used (in contrast to what happens in a standard mathematica notebook). This example (and screenshot below) show the problem: