I'm writing a long non-fiction text that describes a fictional setting.
I came up with a fiction piece for that setting, to include as further illustration.
I decided it would work best if I split it up three ways.
One part to go in the beginning (as prologue); One part to go in the middle; And one part to go in the end (as epilogue.)
But, what should I call the part that goes in the middle?
I'm writing it all in spanish (my native language), but so far I've been unable to find a proper or even vaguely accurate term, regardless of language.
Any help in either english or spanish would be muchly appreciated.
Thanks a lot in advance!