The function loads a single tile to R as an object of class Tile.
The function is also capable to load the toy mosaic produced by the Agilent sofware. You can do so by passing as bspfile parameter the .bsp file comprised in a mosaic folder. However, beware! the toy mosaic IS NOT the complete mosaic, it is only a reduced version of it (i.e. you will lose resolution, and you will not longer know the pixel size). Use it with care.