Question

Does 3 underscore characters (in normal text) convert everything between it and the next set of 3 underscores to bold?

See: http://socratic.org/questions/how-do-solve-the-following-linear-system-2x-3y-1-x-2y-8

Answer 1

Yes, something like that.

Explanation:

Indeed, the underscore character acts a text modifier in "normal text", i.e. not in math mode.

For example, you can have bold, italic, and bold + italic text by using one, two, or three underscore characters before and after a text.

It works like this

• one underscore character `->` italic text
• two underscore characters `->` bold text
• three underscore characters `->` italic + bold text

This is how it would look with one underscore character flanking the text.

This is how it would look with two underscore characters flanking the text.

This is how it would look with three underscore characters flanking the text.

As you can see, the underscore character acts as an alternative for `color(black)("*")` in normal text.

This is how it would look with one star character flanking the text.

This is how it would look with two star characters flanking the text.

This is how it would look with three star characters flanking the text.