An extremely complex GUI and instructions not included. John Volanski won an auction on eBay for Arturia Moog Modular software (an emulation of the Moog Modular analog synthesizer.) It showed up in his mailbox in brown paper wrap (never a good sign) sans the 300-page manual, which can’t be purchased separately. “Can you imagine using this thing without any instructions?” says Volanski. “I get mad everytime I think about it!” Our sentiments exactly.