I also have a question - about DefInt

[PhilOfPerth]

Division by 0.

T1 isn't a shared variable.

Of course!!! 

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You're seeing the difference between `/` division and `\` division. Basically, "regular" division turns both arguments into floating-point (`DOUBLE`) values before doing the division, and the result is another floating-point value. If you pass the expression directly to `Print` then you'll be printing the resulting `DOUBLE` value.

If you instead do `t4 = t2 / t1`separately and pass `t4` to `Print` then you'll always see an integer. The assignment of the value to `t4` turns the value back into an integer value. Alternatively, you can Print `t2 \ t1`, which will do integer division. Integer division does not turn either value into a floating-point value and will give you an integer result.

Separately you get Inf because you're doing a divide-by-zero, the `t1` variable is not shared with the `Sub`.

Ah, got it; thanks.