How to add a bar over a letter
Use a built-in accent character
- Go to the Insert tab > Symbols group (far right), then click Equation.
- Select Insert New Equation from the bottom of the list.
This opens the Equation Tools > Design tab and puts a Type equation here box into your document.
- Click Accent on the Design tab > Structures group.
- Scroll down past the Boxed Formulas section to the Overbars and Underbars section.
- Click the Overbar icon.
You’ll see something like this in your document:
- Click in the dashed box, then type D.
- Click outside the equation box to hide it; you can show it again by clicking on the D with the macron.
Your character will look like this:
How To Change the Default Font in Equation Editor From Cambria
Out of the box, Office 2010 and 2013 have only Cambria with all of the math characters that are needed for the Equation Editor. You can verify this is also how-to-change-the-font-in-equation-editoryour circumstance by clicking expand link at the bottom right of the TOOLS box in the EQUATION EDITOR > DESIGN tab
After some considerable effort, I have still not found a compatible font so I have posted this with Microsoft Partner Support and after some back and forth, this is what they said:
…Cambria Math is the only supported font that can be used in Equation Editor in Word 2013 for the time being. Anyway, the DEFAULT FONT is a drop down box and it will have alternates after some improvements are made by the developing team.
A slightly longer answer is the work around of forcing your equation to “NORMAL TEXT” (see the screen shot to the right). The tells Word that you you are not writing math, just normal text which will then allow you to change the font at will. The risk here is that you will lose characters because they don’t exist in your new font (say Arial).
