To prevent elements of text that belong together from being split up by a line break, please use non-breaking spaces.

Examples:

• Numbers should not be split across lines; "20 000" must not become "20
  000". Use a non-breaking space after "20".
• Numbers and their units or symbols belong together; make sure to keep "10 °C" on one line, and avoid the possibility of it turning out as "10
  °C".
• To ensure cross-references do not come out like this: "see Table
  7", insert a non-breaking space between "Table" and "7".

To insert a non-breaking space in Word, simultaneously press the following three keys: <Ctrl> <Shift> and the spacebar.

Note: When the "Show paragraph marks" option is active in Word, a non-breaking space will look like the symbol for "degree": °