Okura Yusoki A Series Manual page 210

13.1.6.4. Even layer area (D)
In custom pattern creation, even layer won't always be the same as odd one so even
layer pattern needs to be specified whenever.
13.1.6.4.1. Exact same pattern
Even layer pattern is same as odd one.
Odd layer
13.1.6.4.2. Rotated 90 degree pattern
Even layer pattern is of odd one rotated 90 degrees.
Odd layer
Even layer
Even layer
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