What operation does this format specifier "\a" really perform

Here is a listing of escape codes:

\n newline
\r carriage return
\t tab
\v vertical tab
\b backspace
\f form feed (page feed)
\a alert (beep)
\' single quote (')
\" double quote (")
\? question mark (?)
\ backslash ()

commented: so just a beepo +0
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