Access points or nodes can be placed into learning mode, which enables them to determine their position from other Nodes over time for easy deployment of new beacon sources. When in learning mode, the tag should be SLS (or SL[version_num]).
Learning should only be enabled on a beacon source when there are sufficient Nodes to create a reference position from. The further away the new Nodes are, the less accurate they will be.
Multiple nodes can be placed into learning mode at the same time, and they will all work together to generate their own reference positions. Nodes in learning mode constantly transmit what they think their position is to achieve this.
When in learning mode, application developers can choose to use the position of these beacon sources, but it won't be as accurate. Learning should occur for a period of time appropriate to the application, then switch to regular mode (SPS tag).