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I have been trying to figure out what these 3 fonts are named for quite a while now and I have been having no success. I did get some help from one of my friends that said the first one was ccr and the last one was cmss. But when I tried searching for them online and trying to use them myself I couldn't do that either. I am a beginner at LaTeX.
On a guide online it told me to use these, but that made the default text a different font, how would I change the font of a specific block of text?