Editing number sign operators

== _Number sign operators_ === _Negative numbers_ The *minus symbol* may be used as a [[unary]] operator in [[negative]] number representation: number = -5 # -5 is negative === _Positive numbers_ The *plus symbol* may be used as a [unary] operator in [[positive]] number representation. This form is generally not required, because numbers are [[positive]] by default: number = +6 # 6 is positive

Summary:

This change is a minor edit.

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