Inside <replaceable>prompt</replaceable>, the sequence
<literal>%s</literal> is replaced by the names of the
modules currently in scope, and <literal>%%</literal> is
- replaced by <literal>%</literal>.</para>
+ replaced by <literal>%</literal>. If <replaceable>prompt</replaceable>
+ starts with " then it is parsed as a Haskell String;
+ otherwise it is treated as a literal string.</para>
</listitem>
</varlistentry>