There are many options to create a dash in Microsoft® Word®. The most common ones are:
However, if you use the command "x0097" (see screenshot below) to create an em dash, no other text editor than Word will display it, because it is actually a control instruction for machines and not meant for the use in texts. This means when you import your text into another text editor, your "x0097" em dash might get lost.
Therefore we recommend using one of the dashes we've listed above.