a grid is a network of lines (like a grid) which are measured (ie a 1mm grid is 1mm squares in a grid)
snap is the command that makes the lines that you draw 'snap' to the corners of the grid,so everything stays square, and the like.
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Hypocritical Signature I tried to delete: Procooling: where scientific principles are ignored because big corporations are immune to mistakes and oversights.
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