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Is there perhaps a tool/flow that would be able to close small gaps or holes within a layer?
For instance imagine two polygons next to each other, spaced by 0.01um. For instance one has a coordinate of 9.994um and the other 9.997um. After 'snapping' to grid of 10nm one will end up at 9.990, the other at 10.000um, with a gap of 10nm
We see that sometimes, due to rounding to the DB grid, the adjacent cells in an array of instances (not a single CellInstArray) can end up causing a tiny gap. Yes, we have a cell where the pitch is e.g. 2.9975um over hundreds of um.