SPACE (U+0020) - consistency -> SPACE (U+0020)

Due to the difficulty in clearly representing a space character (and other control characters) we have generally written SPACE (U+0020) which is a departure from the usual listing for characters.

However, we also use the full cap form, SPACE, without the following Unicode reference.

Suggest: SPACE (U+0020) in all instances.

6.1.2 White space Characters (5x), 6.1.3 <text:s> (3x), 17.24 (move outside the parentheses and add a comma in front of it), 19.765 text.c.