Emphasis

Use _underscores_ around text to be emphasized.

The <em> HTML tag is applied:

_a phrase_  →  <em>a phrase</em> → a phrase

If the text is not meant to have structural emphasis, but simply to be styled in italic (e.g., a phrase in a foreign language) use double underscores:

__a phrase__ → <i>a phrase</i> → a phrase

NB: quick tags must open and close within a single paragraph to produce valid markup.

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