Sony 4-113-168-11(2) Operating Instructions Manual page 58

Menu items
MODE
SENS
VOR
LOCK

GB
Settings (*: Initial setting)
Sets the recording mode.
LP:
Long play monaural recording mode.
SP:
Standard play monaural recording mode.
HQ:
High-quality monaural recording mode.
SHQ*:
Super high-quality monaural recording mode.
Sets the microphone sensitivity.
*:
To record at meeting or in a quiet and/or spacious place.
:
To record dictation, or record in a noisy place.
Sets the VOR (Voice Operated Recording) function.
ON:
Recording starts when the IC recorder detects sound and
pauses when no sound is heard, eliminating recording
during soundless periods. The VOR function is activated
when  REC/PAUSE is pressed.
OFF*:
The VOR function does not work.
Locks the message so that you cannot erase it, add a new
message to it, add an overwritten message to it, or divide it.
ON:
The lock function is activated.
OFF*:
The lock function is cancelled.
See page
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