Which key together with space do I have to press, that the space .

[Genine]

Hi Uptool
Shift + Control + Space will give you a hard (non breaking) space that will
keep characters together on the same line even if the line wraps.
Genine

P.S. if you put your question into the body of the message in future, people
will be able to help you better, there is only a limited number of characters
available for the heading of each posting.