Use or create a seamless map layer to treat a group of base tables as if they were one. A seamless layer allows you to change display attributes, apply or change labeling or use the Layers window for an entire group of tables at once. You can also retrieve information using the Info command, and select or browse any one of the layer's base tables. A base table can be any regular MapInfo Pro table. Grid layers cannot be made seamless.
This feature is especially useful when you want to display a vector or raster backdrop for your maps such as joining street or boundary maps. For example, you may have a seamless layer of county boundaries made up of several individual county tables.
When zooming in on a seamless layer, MapInfo Pro only opens data for displaying the map at the specific zoom level-only those component tables on display open. If you change the zoom level, then MapInfo Pro analyzes which tiles to open and which tiles to close, and does not cache the data. Specific raster handlers open raster images, which are usually slower than vector tables.