Hi Mike & Don,

I'm afraid that you have both lost me just a bit.

In the first instance I am simply trying to establish what we mean by the various words that tend to be used in the field of historic buildings. I agree that when "we" manage to assemble a list of words that are typically employed and we agree meanings and understandings for those words then we can most probably reorder these words into a more logical framework if indeed that helps.

Re "Maintainence" :- It is a reality (in Europe) that most historic buildings are now covered by some form of protective legislation and this tends to exclude maintenance. So, it might be important to understand where maintenance finishes and repair takes over.

Regards

Ken Hume