I think the Trempers explained it pretty good on their site, at least the difference in lines.
"The exciting R.A.P.T.O.R. is an A.P.T.O.R. expressing the gene for all ruby-red eyes. R.A.P.T.O.R.S. hatch with and retain totally red eyes throughout their lives."
So I would then assume R stands for the RED eye.
"A.P.T.O.R. = a Carrot-head, Carrot-tail, Hypo Tangerine, Patternless, Tremper Albino in both normal and Giant size. A.P.T.O.R.s have the regularly pigmented albino eye."
Now the BLACK eyes you are talking about would be ECLIPSES
" ECLIPSE hatch with and retain totally black eyes throughout their lives. Their typical pattern is a series of longitudinal rows of black spots or dashes with white feet, lips and nose with freckling while the body is yellow and often combined with a carrot-tail. Some ECLIPSE have greatly reduced body spotting"
It seems like eclipse is still showing the body spotting, I'm not sure if this answers your question, but per Trempers page, non have come out patternless or spotless yet.
Now Tilly (thats her name now) I think would be considered a snake eye A.P.T.O.R. or at least an A.P.T.O.R
Closest pic to her color is # 932 R.A.P.T.O.R.
She DOES have a reverse dorsal stipe you are not imagining that 
I want o make it clear I didn't not purchase this gecko from a breeder, I did purchase her from a petstore (who they get their geckos from, I will ask) But I'm not affilited with Tremper, I just think they make REALLY Gourgeous gekos, and the answered you questions better that what I would have come up with CSHerps 
Hope that helped (specially coming from a leo newbie)I've been really interested in genetics ever since I started with color morphic reptiles about 10 years ago.
Again thanks guys!
Trempers Leopards
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1 Whites Treefrogs (Gleep, Gloop, Gazoo)
1 Bearded Dragon (Butterfinger)
1 Mali Uromastyx (Groucho)
1 Leopard Gecko (Tilly)
1 Dwarf Bunny (Rufus)
1 Togo Starburst Tarantula
1 Blue Cobalt Tarantula
1 Rosehair Tarantula
1 African Spitting Scorpion
1 Betta Splendins
1 Spectacled Amazon (Indiana Jones)
7 Button Quail (I promise they all have names)
1 Spaztic black kitty (Nikkita)
4 Hairless rats (Shimmy, Elvira, Squee, Gir)
4 "normal" rats (Marilyn, Bettie, Eve, Zim)
4 Hedgehoggies (Mr. P, Mama Hog, Spooky, Zoro)
3 WOW char (they are pets too.)
Even us girls can like slimey scaley and squishy things.