Sony DCR-TRV17 Operating Instructions (primary manual) Operating Instructions Manual page 147

Writing a print mark – PRINT MARK
To cancel writing print marks
Select OFF in step 6, then press the SEL/PUSH EXEC dial.
If the write-protect tab on the "Memory Stick" is set to LOCK
You cannot write print marks on still images.
Moving pictures
You cannot write print marks on moving pictures.
While the file name is flashing
You cannot write print marks on images.
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