本文共 611 字，大约阅读时间需要 2 分钟。
digraph g { a; b[shape=box]; c[shape=circle]; d[shape=point];}  |  |  |  |
| box | polygon | ellipse | oval |
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| circle | point | egg | triangle |
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| plaintext | diamond | trapezium | parallelogram |
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| house | pentagon | hexagon | septagon |
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| octagon | doublecircle | doubleoctagon | tripleoctagon |
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| invtriangle | invtrapezium | invhouse | Mdiamond |
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| Msquare | Mcircle | rect | rectangle |
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| square | star | none | note |
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| tab | folder | box3d | component |
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| promoter | cds | terminator | utr |
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| primersite | restrictionsite | fivepoverhang | threepoverhang |
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| noverhang | assembly | signature | insulator |
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| ribosite | rnastab | proteasesite | proteinstab |
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| rpromoter | rarrow | larrow | lpromoter |
转载于:https://blog.51cto.com/which/1303372