# File rexml/instruction.rb, line 47
    def initialize(target, content=nil)
      if target.kind_of? Source
	super(content)
	md = target.match(PATTERN, true)
	@target, @content = md[1], md[2]
      elsif target.kind_of? String
	super()
	@target = target
	@content = content
      elsif target.kind_of? Instruction
	super(content)
	@target = target.target
	@content = target.content
      end
      @content.strip! if @content
    end