# File Automaten.rb, line 74 def rueck_lesen(symb) str = getItem.reverse ind = str.index('.') substring = str[ind+2..(str.length-1)] ch = substring.split[0] return nil if ((substring[0,1]=='>') or (ch.reverse!=symb.to_s)) return Item.new((" "+ch+". "+substring[(ch.length+1)..substring.length-1]).reverse,@rechtskontext) if ind==0 return Item.new((str[0..ind-1]+" "+ch+". "+substring[(ch.length+1)..substring.length-1]).reverse,@rechtskontext) end