Changed code so that marks can only be showed once. No more double marks if clicking on a show function multiple times.
Added warning and confirmation dialog on Show spaces if text is longer than 20,000 characters.
Implemented present documentation, linked from Help menu.
Added detection of soft hyphens and non-breaking hyphens (as part of non-breakable spaces features).
Changed highlight color of all non-breakable spaces related symbol to orange for added visibility.
Added German and Italian to interface.
Removed vertical tabs detection, after I realized that not only Google Docs doesn't handle them, but also that false positive are generated by page breaks.
Reinstated saving of “highlight” parameters.
Corrected code to deal with permissions bug that generated the horrible “Allow this application to run when you are not present” warning
Cleaned code, minor bugs correction.
Submitted code verification by Google for Show to be recognized as a trusted application.
Cleaned code, minor bugs correction.
Removed saving of “highlight” parameters, trying to correct permission bug.
First version, French / English / Spanish interface.