You can use Word's own Find function, which is probably simplest. Make sure
hidden text is displayed, leave the Find field blank but select Formatting >
Font > Hidden.
For a more efficient VBA method, you can check the Hidden property of any
range (eg the entire paragraph) -- if the range contains *some* hidden text,
the property will return 999999 -- and thus you need to check further.
And for all that, checking each character may be inefficient, but it's still
extremely quick.
> Hello there,
>
[quoted text clipped - 7 lines]
> Thanks in advance,
> -Iroel