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<a name="TUI-Configuration"></a>
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<a name="TUI-Configuration-Variables"></a>
<h3 class="section">25.5 TUI Configuration Variables</h3>
<a name="index-TUI-configuration-variables"></a>

<p>Several configuration variables control the appearance of TUI windows.
</p>
<dl compact="compact">
<dt><code>set tui border-kind <var>kind</var></code></dt>
<dd><a name="index-set-tui-border_002dkind"></a>
<p>Select the border appearance for the source, assembly and register windows.
The possible values are the following:
</p><dl compact="compact">
<dt><code>space</code></dt>
<dd><p>Use a space character to draw the border.
</p>
</dd>
<dt><code>ascii</code></dt>
<dd><p>Use <small>ASCII</small> characters &lsquo;<samp>+</samp>&rsquo;, &lsquo;<samp>-</samp>&rsquo; and &lsquo;<samp>|</samp>&rsquo; to draw the border.
</p>
</dd>
<dt><code>acs</code></dt>
<dd><p>Use the Alternate Character Set to draw the border.  The border is
drawn using character line graphics if the terminal supports them.
</p></dd>
</dl>

</dd>
<dt><code>set tui border-mode <var>mode</var></code></dt>
<dd><a name="index-set-tui-border_002dmode"></a>
</dd>
<dt><code>set tui active-border-mode <var>mode</var></code></dt>
<dd><a name="index-set-tui-active_002dborder_002dmode"></a>
<p>Select the display attributes for the borders of the inactive windows
or the active window.  The <var>mode</var> can be one of the following:
</p><dl compact="compact">
<dt><code>normal</code></dt>
<dd><p>Use normal attributes to display the border.
</p>
</dd>
<dt><code>standout</code></dt>
<dd><p>Use standout mode.
</p>
</dd>
<dt><code>reverse</code></dt>
<dd><p>Use reverse video mode.
</p>
</dd>
<dt><code>half</code></dt>
<dd><p>Use half bright mode.
</p>
</dd>
<dt><code>half-standout</code></dt>
<dd><p>Use half bright and standout mode.
</p>
</dd>
<dt><code>bold</code></dt>
<dd><p>Use extra bright or bold mode.
</p>
</dd>
<dt><code>bold-standout</code></dt>
<dd><p>Use extra bright or bold and standout mode.
</p></dd>
</dl>

</dd>
<dt><code>set tui tab-width <var>nchars</var></code></dt>
<dd><a name="index-set-tui-tab_002dwidth"></a>
<a name="index-tabset"></a>
<p>Set the width of tab stops to be <var>nchars</var> characters.  This
setting affects the display of TAB characters in the source and
assembly windows.
</p>
</dd>
<dt><code>set tui compact-source <span class="roman">[</span>on<span class="roman">|</span>off<span class="roman">]</span></code></dt>
<dd><a name="index-set-tui-compact_002dsource"></a>
<p>Set whether the TUI source window is displayed in &ldquo;compact&rdquo; form.
The default display uses more space for line numbers and starts the
source text at the next tab stop; the compact display uses only as
much space as is needed for the line numbers in the current file, and
only a single space to separate the line numbers from the source.
</p></dd>
</dl>

<p>Note that the colors of the TUI borders can be controlled using the
appropriate <code>set style</code> commands.  See <a href="Output-Styling.html#Output-Styling">Output Styling</a>.
</p>
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