TMN — Issue with the "Basic Concepts" section

The "Basic Concepts" section contains an explanation of terms to be used throughout the document. I find that the definition of some terms and their later use in the same Basic Concepts section appear, at first glance anyway, to be ambiguous or contrary to each other thus throwing me into a terrible state of confusion!

Namely, 8th paragraph (included below) does not seem to enable me to understand the 12th paragraph that I also include. Namely, the problem is the words in brackets do not seem correct in the context.

1) Managed domains are sometimes referred to as "agents" and "managed object domains." while manager domains are sometimes referred to as "manager applications" or simply "managers."

2) When a manager (agent) gains access to a managed object domain (manager domain), it is said . . . .

If it is a case that one can read the sentence using the bracketed words as the alternative that is ok, i.e.,

form 1) When a manager gains access to a managed object domain, it is said . . . .

form 2) When an agent gains access to a manager domain, it is said . . . .

But, in my view it is not a consistent use of the brackets as earlier in the same paragraph bracketed words are used as an alternative name for something they follow (an equivalent entity) (see paragraph 6 same section) as opposed to a different entity.