: Test for source tree numbering ...A...: Level A ...A.A...: Level B ...A.B...: Level B ...A.B.A...: Level C ...A.C...: Level B ...A.C.A...: Level C ...A.C.A.A...: Level D ...B...: Level A ...B.A...: Level B ...B.A.A...: Level C ...B.A.A.A...: Level D ...B.A.A.A.A...: Level E ...C...: Level A ...C.A...: Level B ...C.A.A...: Level C ...C.A.A.A...: Level D ...C.A.A.A.A...: Level E ...C.A.A.B...: Level D ...C.A.A.B.A...: Level E ...C.A.B...: Level C ...C.A.B.A...: Level D ...C.B...: Level B