sh array and the dash phase are expressed in user space units.
  <pre>
  Examples of line dash patterns:

      "[Array] Phase"     Appearance          Description
      _______________     _________________   ____________________________________

      "[] 0"              -----------------   Solid line
      "[3] 0"             ---   ---   ---     3 units on, 3 units off, ...
      "[2] 1"             -  --  --  --  --   1 on, 2 off, 2 on, 2 off, ...
      "[2 1] 0"           -- -- -- -- -- --   2 on, 1 of