Program To System Fields
Program to system fields (referenced from here out as P fields) can be used to emphasize field data on display files.
These can be used as an alternative to using indicator controlled display attributes.
P fields are one-byte codes passed to the display file at run-time.
Indicator controlled attributes must be determined at compile time.
In order to utilize the P field attributes the display file must contain a field that is one byte character for the field you wish to alter attributes for.
A myfield 20A B 10 6DSPATR(&fldattr)
A fldattr 1A P
So if you wished to display the contents of myfield in Red with underlines, you could do so by using the following code in your RPG program.
/free
fldattr=x'2C';
/end-free
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