As you are creating your equation, you will need to change font sizes on certain characters and equation elements so they appear correctly in the equation. The Equation Editor provides five predefined character types (Full, Subscript, Sub-Subscript, Symbol, and Sub-Symbol) that allow you to change font sizes simply by indicating what the character or element represents. To do this, follow these steps:
The Equation Editor allows you to define the appropriate sizes of character types. To do this, follow these steps:

Figure 1. The Sizes dialog box.
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You can specify exactly where subscripts appear in your equations.
Discover MoreThe Equation Editor can be a great boon when you need to include complex mathematical equations in your document. The ...
Discover MoreIf you are using matrices in your equations, you may want to adjust the spacing used between columns.
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