So these designations that appear on some Rapture Pro programs. Is there a chart somewhere that explains their meaning?
Like FS, JAL, JJ, BD, SEQ, etc.
 
Thanks!

They are the Sound Designer's initials/handle.
 
I haven't fully examined RapPro and on tablet now / no time etc ... but here's a list I put together for Z3TA+ 2 ... 
 
Ever wonder what all those initials, next in the Factory Content presets, are (in Z3TA+ 2)?

They are the Sound Designer's handles:

• BT - Nico Herz, Big Tone Studio
• FG - Frank Genus, Pro Sounds
• FS - Francesco Silvestri, FI Sound
• FI - Chad Beckwith, FI Sound/Patch Arena
• XS - Bryan Lee, Xenos Soundworks
• BC - Ben Cantil, Encanti Productions
• DSF - Tim Swartz, Digital Sound Factory
• DMS - Kieran Swarbrick, Dance MIDI Samples
• WRJ - Bill (William) Jackson, Cakewalk
• BD - Brian Desmond, Izotope (was with Cakewalk during Z3TA+ 2 project /release).

Also with Rapture Pro . . . BS stands for it's initial state at release . . . runs away and hides j/k