The entirity of their moralilty was based on "good and bad" and "right and wrong", you could have good actions that were wrong and bad actions that were right. There wasn't any explicit avoidance of either bad or wrong in this system as both bad and wrong were often needed, e.g. "it is bad and wrong to let the bad guyerson live, but I know I can't defeat them and there is something I need to do more."
Notably actions that were given moral judgement were only those in the immediate present because screw foresight, forward planning etc. Also those actions in the future did not change the moral character of the present action, that sounds dangerously like something which results in less beating self round the head with the despair squid.
Good actions generally preserved life, made people happy etc. Bad actions did the opposite of this. Life was generally the just of this axis, taking a life was nearly always bad, saving it was nearly always good.
Right actions consist of following a code, for example "don't let the bad guy win", "stop the suffering" etc, effectively doing what had to be done, wrong actions were nto doing what you thought had to be done.
The best example of this was the salves on the 3ygb that got caught by the drow: The Good thing to do would be to save them, to stop the drow and let them run away. However this was also the Wrong thing to do as ultimately they would only be either caught, get infected with corruption or starve. The right thing to do was to kill them, but this was a Bad thing to do as it was taking away any chance they had.
Being a Righteous person was a very dangerous thing to be, this meant that you did right without consideration of good or bad. This is particularly dangerous as it leads to "Heroism" which Alferwen defined as "Being very sure that you are doing the right thing at all times, having lost any perspective on what Right is with no consideration of good or bad"
Roughly speaking in any situation it could be more important to do one particular course, e.g. "the good" or "the right", hence various mutteringing throughout the 3ygb of "there is no good to be done here no more, only right".
The rest of the belief system was gleefully pilfered from a comment made by the Shadow Child in the comic "Digger", which was the comment about having a shadow on your heart. Doing bad or wrong things left a dark stain upon your spirit. Dark stains on your spirit are very bad (everyone starts off with no dark stains), Alferwen's theory on why this was was that those stains made it easier to do Bad and Wrong things (which often goes hand in hand with a descent into Heroism. Dark stains stay there forever. If you were aware that this was happening and knew that you were doing bad or wrong things then you could avoid sliding in this direction. According to Alferwen most people in the Wessex arms couldn't do this, but Alferwen was pretty sure they could do it. Hence it became uite important to stop people doing bad and wrong things (because they would not use them in a sensible manner) and do those bad and wrong things themselves when needed to save the souls of others. Effectively getting all the dark stains yourself in the hope that you could resist them better than other people.
Overall this morality system was entirley sucessful in that it reduced Alferwen to a little wibbly heap on the floor quite often...