Are the main abstract headings = Principals?
Are the subordinate ones Strategies?

A husband and wife are discussing what sort of dispute resolution provision to put into their divorce agreement (the procedure they promise to use if they have disagreements about parenting or other issues after the divorce). The wife favors a mediation/arbitration procedure. The husband likes that also, but states that he wants to "leave the option open" to take future disagreements to court. (These two options, while not incompatible, are contradictory in practice and this is explained to the husband.) The husband is stuck, because he seems to want two contradictory choices. The mediator picks up on the husband's initial statement about leaving options "open", and asks, "How far open?" The husband looks up and seems to understand this in terms of containers, passageways, and doors. He replies, "That's a very good question." They went on to negotiate a partially open option.