Posted 12 May 2010 - 10:49 PM
"OpenOffice Word Processor will toggle non printing characters but i don't know what you mean by hidden text?"
In a Word or OO-Writer test doc, select a sentence or two, then go to the font formatting dialog box [whatever its exact name--see Format menu]. You can choose font style, size, colors, bold, italic, underline, strikethrough, etc. You'll also see Hidden. Click the Hidden chk box, click OK.
Toggle the Show/Hide button, to show/hide the hidden text.
Writers, editors, localizers, translators, many people use this feature. Often the the user colors hidden text red or blue to make it easy to see when displayed.