I was wondering whether it is considered impolite to highlight sections of one's questions or answers in boldface. In my opinion, suitably applied, it can increase the readability of an answer, but I'm not sure whether other people consider it as too indecent or offensive.
2 Answers
Introduction
This most glorious answer will demonstrate correct usage for great justice and the good of all the empire, from this day forth.
Appropriate use of bold text
Bold text, or more precisely <strong>
text, should be strictly limited to key points that may otherwise be glossed over.
Appropriate use of italic text
Italic text, or more precisely <em>
text, is text deserving of some emphasis but that does not have to leap off the page and sock the reader in the eye. Some people find italics difficult to read. These people should use custom stylesheets for their browsers to make emphasized text display differently.
Appropriate use of block quotes
Block quotes are best used to actually quote some text someone else wrote, but the unfortunate limits of Markdown on MSE force us to use them for other purposes as well, such as
indenting text to
multiple levels.
Appropriate use of preformatted text
Because it is generally hard to read, preformatted text
should be used in strict moderation. It is not bad for
showing source code, and it can handle simple tables in a pinch.
Appropriate use of MathJax to format text
It is appropriate to include text in MathJax if it is part of the mathematics or if it is a small textual fragment of a display. $$S=\{x:\text{$x$ is not prime}\}.\quad \text{Thus:}\quad S\ne \Bbb C.$$
I don't see anything offensive in highlighting a sentence using bold and agree that highlighting some key points in a long post increases readability, but, IMHO,
highlighting an important sentence using
>
(blockquote) looks better,
and bold (again, IMHO) better be reserved for highlighting just a word or two.
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2$\begingroup$ Also, as you point out by using it, italicizing will often be a good alternative when you just need emphasis. $\endgroup$ Commented Jan 23, 2014 at 8:21
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4$\begingroup$ @Tobias Well, yes. But the difference is whether you want local emphasis (visible for someone reading the sentence) or global (visible already when looking at the whole text) $\endgroup$ Commented Jan 23, 2014 at 8:31
<h1>...</h1>
(or use the<h2>
or<h3>
variants if you think the font for<h1>
is too big); or you can type a few horizontal dashes immediately underneath the section heading for the same effect. $\endgroup$