Make an option to show hidden text only.

[guido.deridder]

Sometimes you have to make text hidden for reuse later (e.g; in an operation
manual where a certain parameter or option didn't make it in the official
release of an application).
But if you want to search for it a few months later (e.g. when updating the
manual and in case the option is released) you don't know anymore in which
section or chapter you wrote it.

By just viewing the hidden text only it would make life much easier.

 

[Jezebel]

And the question is ... ?

You can use Find to search for hidden text. And if you really want you could
iterate the entire document setting each paragraph's .Hidden to NOT .hidden,
which would display ONLY hidden text. If you do this a lot, a better
strategy would be to define a style specifically for the purpose: then you
could set that style to hidden/visible, highlighted, etc.