enableEdgeLines

Whether edge lines are enabled.

When true, one extra line of cells is added to the grid on all sides. This is meant to be used with grids that fill their components and need active cells covering the "holes" at the edges, though using it with any other mode is not prohibited.

The extra lines result in the minimum row/column index being -1 instead of 0, and the maximum row/column index being exactly the rowCount/columnCount instead of 1 less than those.