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This question already has an answer here:

See this post:

The format being used:

*note: file_get_contents required link.*

Interestingly, this works fine:

note: file required link.

which makes it seem as if anything with an _ in it will break the formatting for italic.

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marked as duplicate by Shadow Wizard, hims056, Toon Krijthe, Martijn Pieters, kiamlaluno Mar 5 '13 at 13:14

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Well. Isn't _ an alias for * in markdown? =) – J. Steen Mar 5 '13 at 12:19
Yes _ will break italics, because _ is also used for italics along with the single *. – Yannis Mar 5 '13 at 12:19
up vote 3 down vote accepted

You need to escape the underscores in that sentence, they confuse the markup:

*note: file\_get\_contents required [`allow_url_fopen`][4].*

renders as

note: file_get_contents required allow_url_fopen.

Both _ and * are used for markdown italics and bold.

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My mistake. I didn't realise _ was also used for markdown. – Prisoner Mar 5 '13 at 12:20

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