Yes .... VE refers to canadian stations. The W refers to U.S. stations. At one time the u.s. calls were all W and K calls, then later when these ran out they went to WA, WB, WC, WD and at some point KA and KB. Rather than state in the rules "All VE/W,K,WA,WB,WC,WD,KA,KB,NA-NZ,WA-WZ,AA-AZ,NA-NZ,.....well you get the idea, its easier to just say VE/W.
BY the way, when you get to the part of the rules that have class, SOAB is not the long version of SOB.
"A non VE/W"