Sentence:  On the other hand, blank spaces should not be used for <WSD>unary</WSD> operators such as <WSD>unary</WSD> minus <code>(−)</code>, address of <code>(&amp;)</code>, indirection <code>()</code>, member access <code>(.)</code>, increment <code>(++)</code>, and decrement <code>(−−)</code>. 
Meaning of the word marked with <WSD> tags:  Of an operation, function, procedure(,) or logic gate, taking exactly one operand, argument, parameter(,) or input; having domain of dimension 1.