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For example:

Panel

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copy src=$(filename)

if $(_lastrc) EQ 0
  delete src=$(filename)

if $(_lastrc) NE 0
  print msg="The source file could not be deleted."
end

else
  print msg="The copy operation failed."
end

print msg="The operation completed with a return code of $(_rc)."

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 Tip
titleA Stonebranch Tip
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 Indenting lines underneath conditionals by putting spaces at the front of them, although not necessary, provides a visual cue that those lines are to be executed due to the evaluation of a conditional.
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 Using this technique with nested conditionals provides an easy way to tell at which 'level' each of the commands belong.
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 In addition, leaving a blank line before and after a conditional (not required by UDM) provides a way to visually indicate a block of related script commands.
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 This improves the readability and maintainability of scripts in the future.
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