Kiss and make up clause is the actual name. I think that you can go into what section it is, but I wouldn't bother to be honest. It isn't really necessary and it just wastes time.
The kiss and make up clause is during the 12 months separation in order to prove living "separately and apart", while the decree nisi and decree absolute are after the divorce has been granted. The decree nesi is an interim order that states that the marriage is over. This lasts for 1 month after getting divorced and then the decree absolute is in force. The decree nisi is the last chance for the couple to get back together, as they can't marry anyone until the decree absolute is granted. Also, the decree absolute will only be granted if satisfactory arrangements are made for any children of the marriage.