If you'll be conditionalizing stuff to keep it hidden, be
aware that the "hatching" RH uses to identify such content can
render it illegible, so you'd probably need to zoom the WYSIWYG
window to actually read any of it.
I use this feature for each of my partial screenshot images
in installation processes for client and server, where I place a
line under each, containing the image file name and its size values
(e.g., client_login.gif 190 X 220). When version numbers change
throughout an installation process, I follow that information as I
capture the replacements. (With SnagIt, I can zero in on the exact
values by using the down, left, and right keyboard arrow buttons
while "holding" the bounding box that I've "drawn.") This also
prevents me from forgetting to select "Reset Size" with any
differences that RH won't recognize on its own.
Good luck,
Leon