Hughes DIRECTV GAEB0 Owner's Manual page 21

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HMRC-8 Remote Control Function Quick Reference
The DIRECTV Receiver front panel buttons can provide the basic controls
needed to access major DIRECTV System features. However, using the remote
control simplifies accessing the basic system functions, enhances your system's
capabilities, and provides convenient shortcuts to extended features.
Additionally, most remote control buttons can also control other home
entertainment system components.
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Using the remote control