feedgnuplot/t/basic-points-only-plot.ref

    5 ++---------+-----------+----------+----------+----------+-----------+----------+---------+A
      +          +           +          +          +          +           +          +          +
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  4.5 ++                                                                                       ++
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    4 ++                                                                  A                    ++
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  3.5 ++                                                                                       ++
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    3 ++                                           A                                           ++
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  2.5 ++                                                                                       ++
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    2 ++                     A                                                                 ++
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  1.5 ++                                                                                       ++
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      +          +           +          +          +          +           +          +          +
    1 A+---------+-----------+----------+----------+----------+-----------+----------+---------++
      1         1.5          2         2.5         3         3.5          4         4.5         5