# Insert a vertical bar with integration limits into the equation

For example, the ** Newton-Leibnitz formula**:

Sure, you can add the vertical bar and superscript and subscript, but the formula look is not perfect:

To create a good-looking vertical bar with integration limits, do the following:

** 1. ** Add the formula in your document as usual (see
how to add different types of equations).

** 2. ** In the place, where it is needed, add the vertical
line by typing:

,**\vert**or*\vbar*- use the symbol
**Vertical line**in the keyboard.

** 3. ** Add superscript and subscript as a matrix: on the
**Equation** tab, in the **Structures** group, click the
**Matrix** button. In the **Matrix** list choose **3x1 Empty Matrix**:

- In the top box, type the symbol
,*b* - In the middle box, type the symbol
**space**, - In the bottom box, type the symbol
.*a*

** 4. ** Format the vertical line:

** 4.1. ** Select the vertical line:

** 4.2. ** On the **Equation** tab, in the **Conversions** group,
click the button **Text** to highlight it:

** 4.3. ** Change the font and its size as you prefer.

See also Adjusting spacing and alignment in an equation to customize the look of integration limits after the vertical line.

See also this tip in French: Insérer une barre verticale avec des limites d'intégration dans l'équation.