version 2016.2.1 on windows
I accidently clicked the mouse into the output window of studio (where you get the compile results etc) and typed soemthing in there (by mistake) and it came back with <SYNTAX>.
I've been playing with it further, and it's like a cut down version of terminal.
I can "s x=1" and the "w x" and sure enough, it will display "1" (ie the value of x)
when I call one of my utilities ie "d ^dev", my utility runs as expected, but when I try entering a value (my utility was waiting on a read *x) it generated a <SYNTAX> error.