I notice that PStrList has LineName and LineValue
but that PKOLStrList does not have them.

Is there a reason for the difference?

When UNICODE_CTRLS is defined then PKOLStrlList = PWStrList. When not defined. PKOLStrList = PStrList. Just implement functions/properties in PWStrList and it will be in PWStrList too.

Now with KOL v3 released, is it possible to implement the missing items in PKOLStrList within KOL.pas?

LineName, LineValue, IndexOfName, etc...