The normativity of each concrete situation 'appeals' to us, almost as a living thing. This is very different from the normal approach to norms, when they are seen as something we apply from outside the situation, alien to the situation, forcing norms upon it, and treating the situation as passive material. The Dooyeweerdian approach has more 'life' in it. This can save us from legalism, which is the unfeeling application of laws, and gives good grounds for mercy. We hear the norms the situation presents to us, and can respond with a mercy that is appropriate to the situation and is integrated with true justice.
Mercy is no longer an antidote to justice, but part and parcel with it.
Andrew Basden 1999. Written on the Amiga and Protext. 15 October 1999 'is' and 'ought'.