Panasonic KX-T336 System Reference Manual page 169

Function
The following functions appear on the function line of this setting screen
COMMON (SHOW LV, CHG LV, INS. OUS, REMOVE, EXIT) and HRD CPY keys are
available in all setting screens. INDEX key is also available in this screen. The
operation of function keys are described in Section 7-l "Operation of Function Keys."
Only a message is provided here.
INDEX>Numbering Plan (l-9)= B
Q E] H M H EX,T H
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