Osoto PH-9500S Operation Manual page 10

☆ OPERATION：
BRT-/BRT+ :
The brightness can be adjusted with
"BRT-" & "BRT+" .
FREEZE:
Press "FREEZE" to freeze the current image for
detailed studying; re-press it to cancel.
DELETE:
Under the state of Preview to press "Delete",
OSD shows "Delete?", then press "Delete" again to
confirm deleting this image, press other keys to quit.
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