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git-svn-id: svn://svn.icms.temple.edu/lammps-ro/trunk@9909 f3b2605a-c512-4ea7-a41b-209d697bcdaa

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sjplimp
2013-05-24 15:45:19 +00:00
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15
doc/Section_commands.html
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@ -122,8 +122,19 @@ variable X delete
</P>
<PRE>region 1 block $((xlo+xhi)/2+sqrt(v_area)) 2 INF INF EDGE EDGE
</PRE>
<P>The latter produces an identical result, without having to define and
discard a temporary variable X.
<P>so that you do not have to define (or discard) a temporary variable X.
</P>
<P>Note that neither the curly-bracket or immediate form of variables can
contain nested $ characters for other variables to substitute for.
Thus you cannot do this:
</P>
<PRE>variable a equal 2
variable b2 equal 4
print "B2 = ${b$a}"
</PRE>
<P>Nor can you specify this $($x-1.0) for an immediate variable, but
you could use $(v_x-1.0), since the latter is valid syntax for an
<A HREF = "variable.html">equal-style variable</A>.
</P>
<P>See the <A HREF = "variable.html">variable</A> command for more details of how
strings are assigned to variables and evaluated, and how they can be