code: def mkchange(text0,text1,version,mtime):
    "return a Change diffing the two strings"
    return Change(version,mtime,ucrc(text1),diff.word_diff(text0,text1)f mkchange(text0,text1,version,mtime):
    "return a Change diffing the two strings"
    return Change(version,mtime,ucrc(text1),diff.word_diff(text0,text1))
docs: return a Change diffing the two strings