Display attribute HI and Color option WHT in display files

If we select DSPATR(HI),our label gets highlighted and if we select COLOR(WHT),label again highlights. In both case Label looks highlighted i.e. WHITE. Then what is the difference between both properties?

Solution

There is no difference. DSPATR(HI) was implemented before colour displays came out. When IBM started selling colour displays, they re-used the attribute bytes. This way, you could design a display panel and it would work on colour and monochrome displays without changes. The DSM manual has details of the 5250 data stream if you're interested.

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