fgdata/gui/dialogs/ai.xml

<?xml version="1.0"?>

<!-- General ATC/AI options -->

<PropertyList>
    <name>ai</name>
    <modal>false</modal>
    <layout>vbox</layout>



    <button>
      <legend>-</legend>
      <pref-width>16</pref-width>
      <pref-height>16</pref-height>
      <halign>right</halign>
      <border>2</border>
      <binding>
        <command>dialog-close</command>
      </binding>
    </button>

    <text>
        <!-- <label>ATC/AI Options</label> -->
        <label>AI Options</label>
    </text>

    <hrule/>

    <group>
        <layout>hbox</layout>
        <empty>
            <pref-width>10</pref-width>
        </empty>

        <group>
            <layout>vbox</layout>

           <!--  <checkbox>
                <halign>left</halign>
                <label>Enable ATC</label>
                <property>/sim/atc/enabled</property>
            </checkbox> -->

            <checkbox>
                <halign>left</halign>
                <label>Enable AI traffic</label>
                <property>/sim/ai-traffic/enabled</property>
            </checkbox>

            <group>
                <layout>hbox</layout>

                <text>
                    <halign>left</halign>
                    <label>AI traffic density:</label>
                </text>

                <combo>
                    <halign>left</halign>
                    <property>/sim/ai-traffic/level</property>
                    <value>1</value>
                    <value>2</value>
                    <value>3</value>
                </combo>
            </group>

        </group>

        <empty>
            <stretch>true</stretch>
        </empty>
    </group>

    <group>
        <layout>hbox</layout>
        <default-padding>6</default-padding>
        <empty>
            <stretch>true</stretch>
        </empty>

        <button>
            <legend>OK</legend>
            <default>true</default>
            <equal>true</equal>
            <binding>
                <command>dialog-apply</command>
            </binding>
            <binding>
                <command>dialog-close</command>
            </binding>
        </button>

        <button>
            <legend>Apply</legend>
            <equal>true</equal>
            <binding>
                <command>dialog-apply</command>
            </binding>
        </button>

        <button>
            <legend>Reset</legend>
            <equal>true</equal>
            <binding>
                <command>dialog-update</command>
            </binding>
        </button>

        <button>
            <legend>Cancel</legend>
            <equal>true</equal>
            <key>Esc</key>
            <binding>
                <command>dialog-close</command>
            </binding>
        </button>

        <empty>
            <stretch>true</stretch>
        </empty>
    </group>

</PropertyList>