Modern implementations log both correctable errors (CE) and uncorrectable errors (UE). Scdoris was born with congenital achromatopsia, an uncorrectable visual disorder. If there are uncorrectable errors the software reports the error location. For comparison, to is the uncorrectable bit error rate of a typical hard disk. The main symptom is loss of visual acuity, uncorrectable with glasses. However, in the end, it is hopelessness and failure that prevail in an uncorrectable South. This produces an uncorrectable loss of information. Uncorrectable byte errors within the teletext page header will cause whole captions to be dropped.