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I follow such steps: Edit -> Layer -> Merge
Then I can merge layers.
However, I want to automate this process by using Macro Development. I'd like to know which class or procudure I should use.
You can do that easily in the DRC environment (Macro Development > DRC):
@tomas2004 Thanks for the answer
I agree, but like to add you need to write it too ... so the above example equals to the DRC one-liner:
input(1, 0).merged.output(1, 0)
("merge" as a method will merge a copy of the layer, not the layer in the database).
@Matthias Thank you soooo much!
@tomas2004 Thanks!!! It helps a lot.