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node5_mn.html
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<H2><A ID="SECTION00002000000000000000">
Standard Options</A>
</H2>??=[Arrow]
The orientation of the central Arrow may be reversed,
turned into an equality, or omitted altogether.
In each case a label may still be specified, so in effect the
Arrow may be replaced by anything at all.
<P>
These effects are specified by the first token in the central label,
which thus has the form: |<#947#>|;SPMlt;tok;SPMgt;<#267#><EM>label</EM><#267#>|<#947#>|
where ;SPMlt;tok;SPMgt; may be one of ...
<P>
<BR>
<tex2html_image_mark>#defs1268#
<BR>
<P>
When none of these occurs then the default of |_| is assumed.
If the label itself starts with one of these characters then
specify |_| explicitly, or enclose the label within a group |<#273#>...<#273#>|.
See <tex2html_comment_mark>168
<#274#><EM>Extra Options~1</EM><#274#>, for more values of ;SPMlt;tok;SPMgt;.
<P>
2
OPTIONS for the central Arrow:
<P>
<BR>
<tex2html_image_mark>#defs275#
<BR>
<P>
the position of the Arrow is determined by ``nudging'' (see below)
e.g.
|<#278#>^;SPMlt;num;SPMgt;label<#278#>|, where the actual dimen is |;SPMlt;num;SPMgt;@|
<P>
2
<BR>
<tex2html_image_mark>#code279#
<BR>
<P>
<P><tex2html_verbatim_mark>#math452#</P><DIV ALIGN="CENTER">
<tex2html_image_mark>#tex2html_wrap_indisplay1742#
</DIV><P></P>
<P>
2