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| Start / | Knowledge / | Issue Kinds / |
| Changes | Differences | Fakes | Issue Occasions | Kinds | Parallel Issues | Quality |
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Knowledge / Issue Kinds / Coils / Parallel Issues |
Coil parallel issue: the same coils issued at the same time |
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Coil kind parallel issue: the same coils issued at the same time in different kinds (e.g. horizontal and vertical) |
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