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<h3>When I enter one of the
symbols <KBD><B>#</B></KBD><B>, <KBD><B>&amp;</B></KBD>,<KBD><B>|</B></KBD>, <KBD><B>^</B></KBD> or <KBD><B>_</B></KBD> I get an unexpected result or an error message. How can I use these
symbols?</b></h3>
<P>These symbols all have a special meaning in <I>Math</I>:</P>
<UL>
	<LI>The symbol<KBD> # </KBD>is used in stacks and matrices.
	<LI>The symbols<KBD> &amp; </KBD>and<KBD> | </KBD>are used for
	logical and and logical or.
	<LI>The symbols<KBD> ^ </KBD>and<KBD> _ </KBD>are used for
	subscripts and superscripts.
</UL>
<P>To use them in your formula you can put them in quotation marks,
which means that you insert them as text.</P>
<P>If you want to use the symbol &quot;|&quot; you should consider
whether the construction you need is one of the the following:</P>
<UL>
	<LI><KBD>a divides b </KBD>is used to typeset a| b.
	<LI><KBD>abs a </KBD>is used to typeset |a|.
</UL>
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