Hidden job files

I was experimenting a bit with our robot today and found a job I hadn't seen before. It was however only visible for saving to usb-stick, it was not available to select for running.

The job looks like this:

/JOB
//NAME SVETSFEL
//POS
///NPOS 0,0,0,0,0,0
//INST
///DATE 2014/04/03 16:50
///ATTR SC,RW,RJ,SY
////FRAME ROBOT
///GROUP1 RB1
NOP
*TOP
JUMP *END IF IN#(17)=OFF
GETS PX030 $PX001
*END
JUMP *TOP
END

("Svetsfel" means "weld error" in swedish)

I have two questions about it.
First, how can it be hidden except in saving to usb? I'm guessing it's meant for some kind of error handling / retry on failure, but how do i open and edit it in the controller?
Second, what does the attribute SY mean? I haven't encountered it before and haven't seen it in any of the manuals I have access to.

The controller is a DX100 set up as General.

Is it possible to dissable access to the system jobs with settings or parameters? Because I checked on both management and Yaskawa security level and no SELECT SYSTEM JOB option appeared. I do however remember it being there on the DX200 we worked on earlier this year...