I am wondering how the internals of the {sx} work.
If I set s1 to "A", s2 to "B" and s3 as "C", then finally set s4 to "{s1}{s2}{s3}" if I ask it to do a test, does it read it as "ABC" or "{s1}{s2}{s3}"?
If I set s1 to "A", s2 to "B" and s3 as "C", then finally set s4 to "{s1}{s2}{s3}" if I ask it to do a test, does it read it as "ABC" or "{s1}{s2}{s3}"?

