These strings define instructions to load and unload zones of the world (file names relative to the "art" folder).
They can also enable and disable World Spheres.
This table contains the various symbols used in these strings and what type of purpose they serve.
|*||Enable World Sphere|
|&||Disable World Sphere|
Dyna Load Data is a series of file names (relative to the art folder) or World Sphere names followed by the aforementioned symbols to load/unload or enable/disable them.
Here are some examples: