Vivitar DVR 503v2 User Manual page 27

Video' and then press the SHUTTER/OK button. The image now appears in Playback Mode
without the lock icon.
LOCK ALL IMAGES:
To Lock All Images (videos and photos): Use the T/UP or W/DOWN button to highlight 'Lock
All Images' and then press the SHUTTER/OK button. All images now appear in Playback
Mode with the lock icon
UNLOCK ALL IMAGES:
To Unlock All Images (videos and photos): Use the T/UP or T/DOWN button to highlight
'Unlock All Images' and then press the SHUTTER/OK button. The images now appear in
Playback Mode without the lock icon.
5) Press the MODE button at any time to exit the menu and return to your previous mode.
Note:
 Any image that is locked displays a lock symbol
image in the Playback Mode. Videos that are not locked do not display the lock symbol.
 Remember that you cannot delete images while they are locked.
indicating that the images are protected/locked.
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on the LCD screen when viewing that