fgdata/gui/dialogs/atc-dialog.xml

<?xml version="1.0"?>
<PropertyList>
	<name>atc-dialog</name>
	<x>-10</x>
	<layout>vbox</layout>

	<text>
		<label>ATC Communication</label>
	</text>

	<hrule/>

	<group>
		<name>transmission-choice</name>
		<layout>vbox</layout>
		<!-- using one copy of button-template per ATC message -->
		<button-template>
			<hide>true</hide>
			<legend>LEGEND</legend>
			<equal>true</equal>
			<property>PROPERTY</property>
			<keynum type="int">-1</keynum>
			<binding>
				<command>property-assign</command>
				<property>/sim/atc/transmission-num</property>
				<value type="int">-1</value>
			</binding>
			<binding>
				<command>dialog-apply</command>
			</binding>
			<binding>
				<command>dialog-close</command>
			</binding>
		</button-template>
	</group>

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