Primitive type: integer number

Integer numbers are numbers without a decimal point.
In many cases negative numbers don't make sense, but the program never complains about them.

--File syntax--
> something: 123

--Script syntax--
> 123 + 456 * -1

--See also--
| [[type:double]]		Number type that can contain fractional values.
| [[fun:to_int]]		Convert a value to an integer number
