framework builder is includes plus.
it allows you to create complete pieces of functionality and add them to pages in your site.
"Is there anything in frameworks that is different than just inserted an include?"
yes, there is a lot that is different.
the problem with includes is that all the code from the included file gets added at the spot of the include.
with plugins, it looks at the filer and creates code blocks for the code above the doctype, in the head section and in the body.
when add to the pages, the code block for above the doctype gets added above the doctype, the head code block gets added to the head section, the body code block gets added to the body.