As I recall, that's the default output swing for LTspice. You have to change some setting.I tried several things but it still has + -1V.
Not true - it is just an arbitrary implementation choice for a functional behavioral model that can simulate lightning fast. The parameters entered on the spice "Value" line are just scaling factors. If the TS want's to experiment with high voltage logic outputs -- he can do it. It won't hurt anybody.The flipflop has no power connections. The +/-1 V you are seeing probably is the transient protection diode networks.
Extremely silly question, forgive me. But when clicking with the right button, this is the dialog box that appears. I think I'm inserting it wrong, because it keeps going wrong.In order to set these parameters, you right click on the symbol. this brings up a dialog box for symbol attributes. right click on the Value column for the Value attribute and enter the text: