Hummer 2007 H2 Owner's Manual page 283

A-B: This button is used to repeat predefined
sections. Press this button once while the disc is
playing to select the starting position. Press a
second time to select the end position. Press a
third time to turn the function off.
GO: Press this button to access scenes directly
by entering the time/title/chapter.
SUBTITLE: Press this button to switch between
the default language set on the DVD player and up
to any alternate language that could be recorded
on the DVD disc itself. Press this button again
to turn the subtitle function off.
PBC (Playback Control): Press this button to
turn video CD playback control on or off.
ZOOM: Press this button to zoom in on video
images during play or pause modes. Press
and release this button multiple times to increase
the image size in sequence, at 1, 2, or 3 times
of normal size, or ZOOM OFF.
In zoom modes, the direction arrow buttons can be
used to change the zoomed monitor viewing area.
RETURN : Press this button to go back
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one step in the RSE On-Screen Display (OSD)
menu and some DVD menus. Press this button
to exit the current menu and to go to the
previous menu.
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MUTE : Press this button to mute the audio
sound output.
DISP. (Display): Press this button to switch
between display functions of elapsed/remaining
time, full information, or off.
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REPEAT : Press this button to switch between
repeat functions of title, chapter, track, entire
disc, or off.
AUDIO: Press this button to switch between the
default language set on the DVD player or to
any alternate language that could be recorded on
the DVD disc itself.
Numeric Keys: The numbered buttons located on
the lower left side of the system's remote control
are numerical digits assigned to menu options.
To use the numeric buttons, follow the menu
instructions by pressing the number that has been
assigned to the preferred option.
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