A layer has a number of associated
parameters. Some parameters such as named properties, visibility
filters, and names are common to all layers, whether they are tiled
layers or just normal layers. Other parameters are specific to
tiled layers. These are the tiling parameters, the lock filter and
the tile loader, introduced in the previous sections.
Unlike normal layers, when you save a tiled layer to an
.ivl
file, only its attached parameters are saved with the layer, not
the objects it holds.