This question already has an answer here:
- Dashes: - vs. – vs. — 7 answers
I'm interested in all the difference, that means:
- appearance: If there are common rules across fonts like distance from baseline, length and so on.
- typographical rules: If they are handled differently when the compiler chooses where to break lines/pages.
- semantically: The meaning of them, that is also when I'm supposed to use them.
Googling it I've found that exist a lot of similar glyph, even if I never seen them in any LaTeX document. Some of them - all usable in text mode without external packages - are:
\textemdash. So if you want to expand your answer you could also clarify what are those symbols and when they should be used.