def show(ind = '')
      count = 0
      self.to_a.each{|i|
        #puts "#{ind}#{i.name} #{i.object_id} #{i.super.object_id} [#{count}]: #{i.parsed_str} #{i.super.class}"
        puts "#{ind}#{i.name} [#{count}]: #{i.to_s.sub(/^(.{30})(.*?)(.{30})$/, '\1...\3')}"
        # Force parsing a segment
        if i.kind_of?(X12::Segment) && i.nodes[0]
          i.find_field(i.nodes[0].name)
        end
        i.nodes.each{|j|
          case 
          when j.kind_of?(X12::Base)  then j.show(ind+'  ')
          when j.kind_of?(X12::Field) then puts "#{ind+'  '}#{j.name} -> '#{j.to_s}'"
          end
        } 
        count += 1
      }
    end
def show(ind = '')
      count = 0
      self.to_a.each{|i|
        #puts "#{ind}#{i.name} #{i.object_id} #{i.super.object_id} [#{count}]: #{i.parsed_str} #{i.super.class}"
        puts "#{ind}#{i.name} [#{count}]: #{i.to_s.sub(/^(.{30})(.*?)(.{30})$/, '\1...\3')}"
        # Force parsing a segment
        if i.kind_of?(X12::Segment) && i.nodes[0]
          i.find_field(i.nodes[0].name)
        end
        i.nodes.each{|j|
          case 
          when j.kind_of?(X12::Base)  then j.show(ind+'  ')
          when j.kind_of?(X12::Field) then puts "#{ind+'  '}#{j.name} -> '#{j.to_s}'"
          end
        } 
        count += 1
      }
    end
Prints a tree-like representation of the element