A is for Asterisk
The asterisk (*) is a symbol or glyph used within a text to indicate a footnote, e.g., He always spoke of his sister, Anna*.
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Sometimes a row of asterisks marks a new section of text, where a sub-heading is not appropriate and a blank line might be missed.
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In comics and graphic novels, the asterisk is sometimes used with other odd symbols to spell out an oath, e.g., #@&*!
The word asterisk comes from the same root as star and aster, a flower of many petals.
* Anna’s real name was Anna-Marie.
English Manual: Letter by Letter 