action = set(0), enable(1), disable(2), push(3), pop(4)
module = (see JyMOL Java API for the Cmd class to see the mapping of values to modules)
mask =
| Output | 0x01 | 
| Results | 0x02 | 
| Errors | 0x04 | 
| Actions | 0x08 | 
| Warnings | 0x10 | 
| Details | 0x20 | 
| Blather | 0x40 | 
| Debugging | 0x80 | 
| Everything | 0xFF | 
jymol.cmd.feedback(0, 0, 0xff)
will turn on all feedback.