     F1, F2..................... Help
     F6......................... Clear codeplug data to empty
     F10 or ESC................. Exit to Main menu

     ENTER or DOWN Arrow ...... Advance to next data area
     UP Arrow ................. Backup to previous data area
     TAB(Shift+Tab) ............ Advance(backup) to next(previous) frequency
     HOME....................... Move to first data area
     END........................ Move to last valid data area
     Page UP.................... Move to first data area
     Page DOWN.................. Advance to next menu
     LEFT Arrow................. Move cursor left
     RIGHT Arrow................ Move cursor right
     BACKSPACE.................. Move cursor left, delete left
     SPACEBAR................... Clear data to empty
