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227 lines
7.5 KiB
227 lines
7.5 KiB
15 years ago
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<chapter id="configuration">
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<title>Configuring &kmplot;</title>
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<para>To access the &kmplot; configuration
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dialog, select <menuchoice><guimenu>Settings</guimenu><guimenuitem>Configure
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&kmplot;...</guimenuitem></menuchoice>. A number of settings (<guimenuitem>Colors...</guimenuitem>,
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<guimenuitem>Coordinate System...</guimenuitem>, <guimenuitem>Scaling...</guimenuitem> and
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<guimenuitem>Fonts...</guimenuitem>) can only be changed
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from the <guimenu>Edit</guimenu> menu. </para>
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<sect1 id="general-config">
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<title><guilabel>General</guilabel> Configuration</title>
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<para>Here you can set global settings which automatic will be saved when you exit &kmplot;. In the first page you can set calculation-precision, angle-mode (radians and degrees), background color and zoom in and zoom out factors. </para>
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<screenshot>
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<screeninfo>screenshot of the &kmplot; settings dialog</screeninfo>
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<mediaobject>
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<imageobject>
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<imagedata fileref="settingsdlg.png" format="PNG"/>
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</imageobject>
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<textobject>
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<phrase>screenshot of the &kmplot; settings dialog</phrase>
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</textobject>
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</mediaobject>
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</screenshot>
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<para>The second page let you define you own constants. &kmplot; saves the constants in the same file as &kcalc; does. That means you can create a constant in &kmplot;, close the program and load it in &kcalc; and vice versa. &kmplot; only supports constant names that consist of one capital character and if you in &kcalc; define a constant name that is not one character, the name will be truncated. E.g, if you already have the constants "apple" and "bananas" in &kcalc;, they will be renamed to "A" and "B" in &kmplot;.</para>
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</sect1>
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<sect1 id="colors-config">
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<title><guilabel>Colors</guilabel> Configuration</title>
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<para>In the <guilabel>Coords</guilabel> tab of the <guilabel>Colors</guilabel>
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configuration dialog, you can change the colors of the axes and grid of the
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main &kmplot; area.</para>
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<screenshot>
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<screeninfo>screenshot of the colors configuration dialog</screeninfo>
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<mediaobject>
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<imageobject>
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<imagedata fileref="settings-colors.png" format="PNG"/>
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</imageobject>
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<textobject>
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<phrase>screenshot of the colors configuration dialog</phrase>
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</textobject>
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</mediaobject>
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</screenshot>
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<para>In the <guilabel>Default Function Colors</guilabel> tab, you can change the colors used
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for the graphs of the ten functions allowed in &kmplot;.</para>
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</sect1>
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<sect1 id="coords-config">
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<title><guimenuitem>Coordinate System</guimenuitem> Configuration</title>
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<sect2 id="axes-config">
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<title>The <guilabel>Axes</guilabel> Configuration</title>
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<para>
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<variablelist>
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<varlistentry>
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<term><guilabel>X-Axis</guilabel></term>
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<listitem>
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<para>Sets the range for the x-axis scale. You can choose one of the
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predefined ranges, or select <guilabel>Custom</guilabel> to make your
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own. Note that in the <guilabel>Custom</guilabel> boxes, you can use the
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predefined functions and constants (see <xref linkend="func-predefined"/>) as
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the extremes of the range (⪚, set <guilabel>Min:</guilabel> to
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<userinput>2*pi</userinput>). You can even use functions you have defined to
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set the extremes of the axis range. For example, if you have defined a function
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<userinput>f(x)=x^2</userinput>, you could set <guilabel>Min:</guilabel> to
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<userinput>f(3)</userinput>, which would make the lower end of the range equal
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to 9.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><guilabel>Y-Axis</guilabel></term>
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<listitem>
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<para>Sets the range for the y-axis. See <quote>X-Axis</quote> above.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><guilabel>Axis-line width:</guilabel></term>
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<listitem>
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<para>Sets the width of the lines representing the axes.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><guilabel>Tic width:</guilabel></term>
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<listitem>
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<para>Sets the width of the lines representing tics on the axes.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><guilabel>Tic length:</guilabel></term>
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<listitem>
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<para>Sets the length of the lines representing tics on the axes.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><guilabel>Show labels</guilabel></term>
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<listitem>
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<para>If checked, the names (x, y) of the axes are shown on the plot and the axes' tics are labeled.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><guilabel>Show extra frame</guilabel></term>
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<listitem>
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<para>If checked, the plot area is framed by an extra line.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><guilabel>Show axes</guilabel></term>
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<listitem>
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<para>If checked, the axes are visible.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><guilabel>Show arrows</guilabel></term>
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<listitem>
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<para>If checked, the axes are displayed with arrows at their ends.</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</para>
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</sect2>
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<sect2 id="grid-config">
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<title>The <guilabel>Grid</guilabel> Configuration</title>
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<para>You can set the <guilabel>Grid Style</guilabel> to one of four options:
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<variablelist>
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<varlistentry>
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<term><guilabel>None</guilabel></term>
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<listitem>
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<para>No gridlines are drawn on the plot area</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><guilabel>Lines</guilabel></term>
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<listitem>
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<para>Straight lines form a grid of squares on the plot area.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><guilabel>Crosses</guilabel></term>
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<listitem>
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<para>Crosses are drawn to indicate points where x and y have integer values
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(⪚, (1,1), (4,2) &etc;).</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><guilabel>Polar</guilabel></term>
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<listitem>
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<para>Lines of constant radius and of constant angle are drawn on the plot
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area.</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</para>
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<para>The <guilabel>Line width</guilabel> option is used to set the width of
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the lines of the grid.</para>
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</sect2>
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</sect1>
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<sect1 id="scaling-config">
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<title><guilabel>Scaling</guilabel> Configuration</title>
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<screenshot>
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<screeninfo>screenshot of the scaling configuration dialog</screeninfo>
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<mediaobject>
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<imageobject>
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<imagedata fileref="settings-scaling.png" format="PNG"/>
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</imageobject>
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<textobject>
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<phrase>screenshot of the scaling configuration dialog</phrase>
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</textobject>
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</mediaobject>
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</screenshot>
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<para>For each axis, you can set the <guilabel>Scaling:</guilabel> and
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<guilabel>Printing:</guilabel> of one tic. The <guilabel>Scaling:</guilabel>
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option selects how many units apart the axis tics will be (and therefore, how
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far apart grid lines will be drawn), and the <guilabel>Printing:</guilabel>
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option selects the length of one tic when displayed on the screen or
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printed. In this way, these options can be used to change the size of the graph
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on screen or on a page: For example, doubling the <guilabel>Printing:</guilabel>
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setting whilst keeping the <guilabel>Scaling:</guilabel> setting the same will
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result in the graph doubling in in height or width.</para>
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</sect1>
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<sect1 id="font-config">
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<title><guilabel>Fonts</guilabel> Configuration</title>
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<screenshot>
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<screeninfo>screenshot of the fonts configuration dialog</screeninfo>
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<mediaobject>
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<imageobject>
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<imagedata fileref="settings-fonts.png" format="PNG"/>
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</imageobject>
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<textobject>
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<phrase>screenshot of the fonts configuration dialog</phrase>
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</textobject>
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</mediaobject>
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</screenshot>
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<para><guilabel>Header table:</guilabel> sets the font for the information table
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shown in &kmplot; printouts, and <guilabel>Axis font:</guilabel> and <guilabel>Axis font size:</guilabel>
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sets the font and its size used for all labels on the axes in the plot area.</para>
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</sect1>
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</chapter>
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