Specifies the format style. Allowable values are:

LEFT_ALIGN

Left justified, ragged right.

|A paragraph that is|
|left aligned.|

RIGHT_ALIGN

Right justified, ragged left.

|A paragraph that is|
|     right aligned.|

RIGHT_FILL

Left justified, right ragged, filled to width by spaces. (Essentially the same as LEFT_ALIGN except that lines are padded on the right.)

|A paragraph that is|
|left aligned.      |

JUSTIFY

Fully justified, words filled to width by spaces.

|A paragraph  that|
|is     justified.|

Source Code

# File action_mailer/vendor/text-format-0.6.3/text/format.rb, line 544
def format_style=(fs)
  raise ArgumentError, "Invalid value provided for format_style." if ((fs < LEFT_ALIGN) || (fs > JUSTIFY))
  @format_style = fs
end