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an existing cell. If the existing cell has labels but the labels are defined as point labels (no rectangle defined using specific layer-purpose pairs), then the LEF macro's port geometry will be used for the labels. Because the GDS file can define label sizes and fonts, which the LEF file cannot, but because the LEF file may define multiple rectangles per port, the original point label is given the first port rectangle from the LEF file, while the remainder of the labels in the LEF file generate new non-rendered labels in the cell.