Name
  page:GetDash -- get current dash pattern
Synopsis

      t = page:GetDash()

Function
  `page:GetDash()` gets the current pattern of the page.

  This method will return a table that has the following fields initialized:

  `ptn`
    A table containing the individual on and off sections of the pattern.

  `num_ptn`
    The number of elements in the `ptn` table.

  `phase`
    The phase in which the pattern begins.

  See page:SetDash for details.

Inputs
  none

Results
  t
    table containing the current dash pattern (see above)

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