Standard screen format televisions (4:3, the aspect ratio of the screen width to height) are primarily designed to view standard format
Wide screen format televisions (16:9, the aspect ratio of the screen width to height) are primarily designed to view wide screen format
Additionally, viewing other stationary images and text such as stock market reports, video game displays, station logos, web sites or computer graphics and patterns, should be limited as described above for all televisions. Displaying any stationary images that exceed the above guidelines can cause uneven aging of picture tubes (CRTs) that leave subtle, but permanent
and images, and primarily display full screen moving images, not stationary patterns or dark bars. On television models that offer picture sizing features, use these controls to view the different formats as a full screen picture.
Be careful in the selection and duration of television formats used for viewing. Uneven CRT aging as a result of format selection and use, as well as other
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