

Without them it would be almost impossible to create our documents in effective way: it would take very long to correct errors that prevent correct alignment of text and objects. These marks are non-printable characters and show us places where we’ve pressed SPACE, TAB, ENTER, or where hidden text or object anchors are.

It would be very hard to spot one extra space or place where you accidentally pressed TAB twice instead of once if it weren’t for formatting marks.
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If you want Word to correctly align and space your paragraphs, wrap text around objects as you want and to make the report table look exactly as you want to, then you have to make sure you didn’t put extra spaces between words or in cells, that you have paragraph spaced correctly or indentation set up so that your document looks just right. Do not get me wrong as this has nothing to do with grammar, style or spelling. One of the essential rules for effectively creating documents in Word is to write correctly.
