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  • DialogSymbols is an option for Dialog which gives a list of symbols whose values should be localized in the dialog.
  • DialogSymbols :> x , y , ... specifies that x, y, ... should have local values for the duration of the dialog.
  • DialogSymbols :> x = , ... defines initial values for variables.
  • In addition to any symbols you specify, Dialog always uses local values for $Epilog, $Line and $MessageList.
  • The DialogSymbols option sets up local values in a dialog in the same way that a Block enclosing the dialog would.
  • See the Mathematica book: Section 2.13.2.