Hello Maestral, it worked, thanks. Now even the Ctrl+U works, could be wrong code or perhaps I typed wrongly the code (i.e. using wrong keys, the code was correct).

Hello, I'm trying to insert Greek letter in text using the Ctrl+U and the unicode for the symbol (03bc for micron letter but tried also other ones according to the Unicode table) but Inkscape either types something completely different or says Non-printable character. How to get around with this, pl...