We had earlier seen the steps the required for adding tick mark in word document using insert symbol option. Similarly you can follow the below steps to insert a close mark in Word 2016, Word 2013 and Word 2010
Step 1: Move the cursor to the place where you want to add the close mark. Then click the Insert menu and navigate to Symbols section.
Step 2: Click the Symbol option and select More Symbols from the drop down list.
Step 3: In the Symbol dialog, select Windings from the Font drop down list.
Step 4: Then scroll down the Windings Symbol list until you find the close mark.
Select the Close mark and click the Insert button.