public void ToggleTileBreak(int alX, int alY)
        {
            frmTileSets mTileSetsForm = mMainForm.mTilesetsForm;

            if (mTileSetsForm.mlSelectedTile < 0)
            {
                return;
            }
            if (mTileSetsForm.mlSelectedTileSet < 0)
            {
                return;
            }
            if (mlSelectedLayer < 0)
            {
                return;
            }

            cTileLayer TLayer = (cTileLayer)mlstTileLayers[mlSelectedLayer];

            TLayer.ToggleTileBreak(alX, alY);
        }