I said I don't know what point you're trying to make with the whole aka thing. I mean by your logic the Longsword should say GA-TL1 aka Longsword, but it doesn't. Furthermore, yes the C712 is a separate design, it looks nothing like the C709 and is a sub-class to the GA-TL1 model. GA-TL1 is the class of interceptor/strike fighter just like YSS-1000 is the class name of the anti-ship space plane, but the former is called the Longsword and the latter is called the Sabre. So saying Longsword-class Interceptor is just as wrong as saying YSS-1000 aka Sabre. I mean you might as well either say Longsword-class Interceptor instead of GA-TL1 ... because your "Average Joe" won't give two shits about that part much like how it should say Sabre-class Fighter or say GA-TL1 aka Longsword just like the YSS-1000 aka Sabre.
Ok.
Edit:
"Designation: GA-TL1 Interceptor/ Strike fighter", "While some Longswords, like the C709...", "like the C712...", "Because the GA-TL1 is such an extremely flexible vehicle, even these variations are not set in stone," -Halo: The Essential Visual Guide.
"There are multiple variants of the GA-TL1 Longsword that are designed to perform specific functions, such as the C708, the C709, and the C712.", "The cockpit of a C709 Longsword." - halopedia.com
"GA-TL1 Longsword-class Interceptor" -Halo Encyclopedia: The Definitive Guide to the Halo Universe
C712 = Variant
GA-TL1 Longsword-class Interceptor is the official designation.
I called it YSS-1000 because that is what it is refered to as from multiple source all with this similar quote,
"YSS-1000 Prototype Anti-Ship Spaceplane, commonly known as the Sabre," -halopedia.org
"The YSS-1000, usually referred to as the Sabre,"
"Designation: YSS-1000 Prototype Anti-Ship Spaceplane" -Halo: The Essential Visual guide.
"The YSS-1000, or Sabre," -Halo Encyclopedia: The Definitive Guide to the Halo Universe
Sabre = Colloquial name
I then decided, once landing on YSS-1000, that that name might confuse some and so I decided to add a.k.a to it to make it clear for those without very good knowledge on the subject.
Hehe... I think it's funny you've based all your entries off Halo Nation when Halopedia is updated more frequently and more accurately. The Halo Nation Longsword article doesn't even note that in the Halo Reach manual, Longswords come stock with 50mm cannon and that the 110mm guns and 120mm turrets are optional/upgrades.
Also one of those you linked referred to it as the YSS-1000 Sabre so really the links don't help.
In fact the only place it is called YSS-1000 Sabre is in 'Sabre Program' and as the page header for 'YSS-1000' articles on halopedia.com. "YSS-1000
"Sabre"-class starfighter". And even that has double quotation marks, mostly likely in this context meaning signifying, "a nickname embedded in an actual name, or a false or ironic title embedded in an actual title." -wikipedia.org. halo.wikia doesn't rerference the Reach manual but does infact reference both the Halo Encyclopedia and the Visual Guide.
Also I changed the a.k.a almost immediately after you first post, because I am open to suggestion, even if it is passive aggressive and some what insulting, and then increasingly insulting and aggressive and less passive.