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<h4 class="subsubsection" id="Customizing-Toolkit-Behavior-1"><span>15.4.8.1 Customizing Toolkit Behavior<a class="copiable-link" href="#Customizing-Toolkit-Behavior-1"> ¶</a></span></h4>
<a class="index-entry-id" id="index-toolkit-customization"></a>
<p>The specific behavior of the backend toolkit may be modified using the
following utility functions. Note: Not all functions apply to every
graphics toolkit.
</p>
<a class="anchor" id="XREFgnuplot_005fbinary"></a><span style="display:block; margin-top:-4.5ex;"> </span>
<dl class="first-deftypefn">
<dt class="deftypefn" id="index-gnuplot_005fbinary"><span><code class="def-type">[<var class="var">prog</var>, <var class="var">args</var>] =</code> <strong class="def-name">gnuplot_binary</strong> <code class="def-code-arguments">()</code><a class="copiable-link" href="#index-gnuplot_005fbinary"> ¶</a></span></dt>
<dt class="deftypefnx def-cmd-deftypefn" id="index-gnuplot_005fbinary-1"><span><code class="def-type">[<var class="var">old_prog</var>, <var class="var">old_args</var>] =</code> <strong class="def-name">gnuplot_binary</strong> <code class="def-code-arguments">(<var class="var">new_prog</var>)</code><a class="copiable-link" href="#index-gnuplot_005fbinary-1"> ¶</a></span></dt>
<dt class="deftypefnx def-cmd-deftypefn" id="index-gnuplot_005fbinary-2"><span><code class="def-type">[<var class="var">old_prog</var>, <var class="var">old_args</var>] =</code> <strong class="def-name">gnuplot_binary</strong> <code class="def-code-arguments">(<var class="var">new_prog</var>, <var class="var">arg1</var>, …)</code><a class="copiable-link" href="#index-gnuplot_005fbinary-2"> ¶</a></span></dt>
<dd><p>Query or set the name of the program invoked by the plot command when the
graphics toolkit is set to <code class="code">"gnuplot"</code>.
</p>
<p>Additional arguments to pass to the external plotting program may also be
given. The default value is <code class="code">"gnuplot"</code> with no additional arguments.
See <a class="xref" href="Installation.html">Installing Octave</a>.
</p>
<p><strong class="strong">See also:</strong> <a class="ref" href="Graphics-Toolkits.html#XREFgraphics_005ftoolkit">graphics_toolkit</a>.
</p></dd></dl>
<a class="index-entry-id" id="index-GNUTERM"></a>
<p>In addition, the gnuplot program usually provides a number of different
interfaces, known as terminals. Octave normally chooses a default terminal,
but you can override this with the environment variable <code class="env">GNUTERM</code>. This
variable may be set in the shell before starting Octave or from within Octave
before plotting for the first time. For example:
</p>
<div class="example">
<div class="group"><pre class="example-preformatted">setenv ("GNUTERM", "wxt")
graphics_toolkit ("gnuplot")
plot (1:10)
</pre></div></div>
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