- targets multi-loaders in ProDOS order
- load from any slot
- scatter-reads sectors
- sector-level read, can start and end anywhere in a track
- can perform full-track read in one revolution
- no zpage usage after init, and only 6 bytes of stack
- only 2 bytes overhead per read
- can load up to $bd sectors at a time ($0000-bcff)
  (or $c0 sectors if run from banked ROM)
- DOS 3.3 Launcher compatible
- requires only 3 pages in memory