12.10  Whitespace

“Consistently separating words
  by spaces became a general custom
  about the tenth century A.D.,
  and lasted until about 1957,
  when FORTRAN abandoned the practice.”

                                                —Sun FORTRAN Reference Manual

“The right word may be effective,
  but no word was ever as effective
  as a rightly timed pause."

                                                —Mark Twain’s Speeches

Whitespace is Your Friend. Use it liberally to enhance readability. Open up your code; give it room to breathe.

• Put whitespace after a comma or semicolon.
• Break code blocks into paragraphs with blank lines.
• Put three blank lines between functions of significant length.