help needed with xpath and selenium

Question

selenium IDE gave me following xpath for string on page called "System". However this string may appear somewhere other than this place in future.

//ul[@id='idCTree_sor_ul']/li/ul/li[23]/span

how can I rewrite above xpath by spcifying text()="System" in xpath , so in future if index of that string is moved would not impact on my xpath

Answer 1

//span[./text() = 'System']