windrider86,
There is some evidence that the chemicals used in markers can eventually corrupt the information on the recorded side, as they migrate through. I haven't seen it happen yet, but the "people who know" suggest using a marker only on the clear inner 1-inch hub, just to avoid the possibility of damage.
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Proud user of a Fuji FP S3100, Nikon P90, a Canon T3i, and persistence.
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