Barcode Reader User Manual

The checker pattern is reversed.
C(CLEAR) key ⇑ ⇓ ENT key
The gray screen appears with a one-dot wide white outline.
C(CLEAR) key ⇑ ⇓ ENT key
Forty eight right-angled triangles appear.
C(CLEAR) key ⇑ ⇓ ENT key
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