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%TCIDATA{Created=Mon Aug 19 14:52:24 1996}
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\begin{document}


\section{Scientific Notebook and Real Number Symbols}

The symbols $\UNICODE{0x2102} \UNICODE{0x210d} \UNICODE{0x2115} 
\UNICODE{0x2119} \UNICODE{0x211a} \UNICODE{0x211d} \UNICODE{0x2124} $ are
often used to represent Real Numbers. Traditionally the symbols for the Real
Numbers were typeset in bold. Because mathematicians usually do not have
access to bold chalk, they invented the special symbols that are now often
used to represent the number sets. These symbols are known as Blackboard
Bold. Before insisting on using them, consider whether going back to the old
system of ordinary bold might not be acceptable.

\textsl{Scientific Word/Scientific WorkPlace}{} provides a complete set of
the upper case Blackboard Bold symbols. However, the LaTeX font containing
the Blackboard Bold symbols is not included with \textsl{Scientific
Notebook\/}. Only $\UNICODE{0x2102} \UNICODE{0x210d} \UNICODE{0x2115} 
\UNICODE{0x2119} \UNICODE{0x211a} \UNICODE{0x211d} \UNICODE{0x2124} $ are
available using the fonts added to your computer when \textsl{Scientific
Notebook\/}{} was installed, but there isn't a way to directly enter these
symbols using \textsl{Scientific Notebook\/}{}.

You can enter any of the symbols $\UNICODE{0x2102} \UNICODE{0x210d} 
\UNICODE{0x2115} \UNICODE{0x2119} \UNICODE{0x211a} \UNICODE{0x211d} 
\UNICODE{0x2124} $ by highlighting them in this document, copying to the
clipboard, moving to your document and pasting the symbols.

If you will use any of the symbols fairly often, then you may want to create
a fragment that contains the symbols. To create such a fragment, highlight
the symbols $\UNICODE{0x2102} \UNICODE{0x210d} \UNICODE{0x2115} 
\UNICODE{0x2119} \UNICODE{0x211a} \UNICODE{0x211d} \UNICODE{0x2124} $ and
then select \textsf{File, Save Fragment }and enter a convenient name such as 
\texttt{Blackboard Bold}. Once the fragment is saved, you can use the
Fragments pop-up to select ''Blackboard Bold'' and the seven available
characters will be inserted into your document. You may also want to create
separate fragments for each character, perhaps using the names \texttt{BbbC,
BbbH,} etc. for each Blackboard Bold symbol.

\end{document}
