content: use AppleScript version "2.4" -- Yosemite (10.10) or later
  use scripting additions
  use O : script "omnifocus"
  use OmniFocus : application "OmniFocus"
  -- If you want to play it safe, set nagMePlease to true
  property nagMePlease : false
  
  on run
  	if nagMePlease then
  		set question to display dialog "Do you want to remove all prefixes?"
  		if button returned of question is "OK" then
  			removePrefixes()
  		end if
  	else
  		removePrefixes()
  	end if
  end run
  
  on handle_string(argv)
  	tell O to setPrefix(selectedItems(), argv)
  end handle_string
  
  on removePrefixes()
  	tell O to clearPrefixAll(selectedItems())
  	display notification ¬
  		"All prefixes removed." with title "Fixxxer"
  end removePrefixes