Usually when these 'strange characters' appear it's due to quotation
marks (single or double) or bold face type or or some other thing which
does not computer-translate to whatever program the viewer has -
MsFt is ripe with adding special effects which aren't
compatible with anyone else ;-(
If you wish to see what is being hidden (?) in these 'strange
characters' send the document/e-mail/ ... whatever to a machine with MsFt's
latest program -
as one of these mini-handhelds ... ... ...
Good luck to you [I use to know this term in the Nordic language;
sorry, it eludes me for the moment]