It is a good idea to use more than one typeface in a document when

there are no columns
your content is boring
your documents are long
you're not using pictures

It is a good idea to use more than one typeface in a document when documents are long.

To add, in typography, a typeface (also known as font family) is a set of one or more fonts each composed of glyphs that share common design features.

unlike some android phones, you won't need to download a program that allows your phone to be a wi-fi hotspot if you have an iphone.

explanation:

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