Fucking with [non-breakable space] and [trailing space]

Blow are simple explanation on non-breakable space and trailing space.

non-breakable space

• It's hard to type non-breakable space when you are typing.
• It's invisible character.
• It's 0xa0(hex),160(digit), in some encoding systems.
• reference: http://en.wikipedia.org/wiki/Non-breaking_space

trailing space

• It's just like:
  abc[][][][end of line] #three trailing space represent as []
• the whitespace between last character and end of line.

References:

whitespace in computer science.