GREAT PLANES RealFlight 7 User Manual page 128

Play Engine Sounds-
Selecting this menu item plays the respective engine sounds during the
editing of this aircraft.
Please note: This setting is only temporary. That is, this setting is not
retained after you exit the aircraft editor.
To select this option, click the Play Engine Sounds menu item. This
will place a check mark before the setting and return to the aircraft
editor. The engine sounds will become audible.
Display Advanced Properties-
This option displays advanced properties for the components in the
airframe. Using the advanced properties, you may fine-tune the
physics calculations performed by RealFlight in order to adjust the
flight performance to your liking. When this option is checked,
additional component properties will be displayed in the property
listing area of the aircraft editor dialog.
Control Surface Deflections-
Selecting this menu item displays the deflection, either Simple or
Advanced, of the selected control surface. If using ailerons, for
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