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TechNote #164: Last modified: 08/14/2017

When using Toggle TeX, sometimes inline equations become display equations

The information in this document applies to:


  • MathType for Windows
  • MathType for Mac
  • Microsoft Word
    except Word 2008 or 2016 for Mac


You're working with a Microsoft Word document. There are MathType equations in the document, but you want to edit them with TeX, rather than double-click to open them in MathType. You use the shortcut key Alt+\, make your edits to the TeX, and use Alt+\ to "toggle" them back to MathType equations. When you do that, you notice that some of the inline equations are now display equations.


MathType has a setting named "Inline Equation", which is either on or off. This setting is in MathType's Format menu. Setting the value of "Inline Equation" correctly depends on inserting the equations correctly. If you copy and paste an equation from MathType, MathType will of course not know where you will paste it into your document. Therefore, the value of "Inline Equation" will be whatever you manually set it to be in the Format menu. If you are copying an equation from one place in the document to paste into another, note that we do not recommend copying and pasting equations this way, but the value of "Inline Equation" will be whatever it was in the equation you copied.

Properly setting the "Inline Equation" property

This value will always be set correctly if you use any of these buttons on the MathType tab in Word:

"Insert Equations" buttons in Word for Windows
Insert Equations buttons in Word for Windows. Similar commands in Word 2011 for Mac.

If you insert equations into Word using these commands and subsequently toggle the equations to TeX, inline equations will remain inline equations and display equations will remain display equations when you toggle back to MathType. If you prefer to copy & paste from MathType into Word, be sure to verify the setting of "Inline Equation" in MathType's Format menu before you copy the equation.

We hope this has been helpful. As always, please let us know if you have questions about this, or if you have additional techniques that work. We'd love to hear from you.

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