def set_border(style)
    set_bottom(style)
    set_top(style)
    set_left(style)
    set_right(style)
  end
def set_border(style)
    set_bottom(style)
    set_top(style)
    set_left(style)
    set_right(style)
  end
Set cells borders to the same style

     Also applies to:    set_bottom()
                         set_top()
                         set_left()
                         set_right()

     Default state:      Border is off
     Default action:     Set border type 1
     Valid args:         0-13, See below.

 A cell border is comprised of a border on the bottom, top, left and right.
 These can be set to the same value using set_border() or individually
 using the relevant method calls shown above.

 The following shows the border styles sorted by WriteExcel index number:

     Index   Name            Weight   Style
     =====   =============   ======   ===========
     0       None            0
     1       Continuous      1        -----------
     2       Continuous      2        -----------
     3       Dash            1        - - - - - -
     4       Dot             1        . . . . . .
     5       Continuous      3        -----------
     6       Double          3        ===========
     7       Continuous      0        -----------
     8       Dash            2        - - - - - -
     9       Dash Dot        1        - . - . - .
     10      Dash Dot        2        - . - . - .
     11      Dash Dot Dot    1        - . . - . .
     12      Dash Dot Dot    2        - . . - . .
     13      SlantDash Dot   2        / - . / - .

 The following shows the borders sorted by style:

     Name            Weight   Style         Index
     =============   ======   ===========   =====
     Continuous      0        -----------   7
     Continuous      1        -----------   1
     Continuous      2        -----------   2
     Continuous      3        -----------   5
     Dash            1        - - - - - -   3
     Dash            2        - - - - - -   8
     Dash Dot        1        - . - . - .   9
     Dash Dot        2        - . - . - .   10
     Dash Dot Dot    1        - . . - . .   11
     Dash Dot Dot    2        - . . - . .   12
     Dot             1        . . . . . .   4
     Double          3        ===========   6
     None            0                      0
     SlantDash Dot   2        / - . / - .   13

 The following shows the borders in the order shown in the Excel Dialog.

     Index   Style             Index   Style
     =====   =====             =====   =====
     0       None              12      - . . - . .
     7       -----------       13      / - . / - .
     4       . . . . . .       10      - . - . - .
     11      - . . - . .       8       - - - - - -
     9       - . - . - .       2       -----------
     3       - - - - - -       5       -----------
     1       -----------       6       ===========

 Examples of the available border styles are shown in the 'Borders' worksheet
 created by formats.rb.