I'm having trouble grasping the concepts behind disjuncts and conjuncts. I believe that an adverb can modify a whole sentence, and is set off with a comma(s) when used in this way, but I'm still not certain how it relates grammatically to the whole.
As an example: Take it, then, If you so desire.
In the above sentence, does then modify the sentence as a whole, or is it functioning in another way?
I will take it then. (at a specific time)
I will take it, then. Then, I will take it. I will, then, take it. (as a matter of fact?)