See also:

Dual Tone Multi-Frequency (DTMF) Tones
The in-vehicle Bluetooth system can send numbers during a call. This is used when calling a menu-driven phone system. For Radio with CD: 1. Turn or press the TUNE/MENU knob and select Enter Number ...

Empty Directory or Folder
If a root directory or a folder exists somewhere in the file structure that contains only folders/ subfolders and no compressed files directly beneath them, the player advances to the next folder ...

Fuel Additives
To provide cleaner air, all gasolines in the United States are now required to contain additives that help prevent engine and fuel system deposits from forming, allowing the emission control ...