[gurps] Building a VehicleML

[Gerald 'roguebfl' Grenier]

Onno Meyer wrote:
>> Not all of us live in Imperial unit country, I like in a country witch use
>> the Metric system
> 
> But GURPS isn't metric, and this is about GURPS Vehicles. So 
> excessive precision isn't necessary. This makes clear that 
> the unit isn't kph or mps ...
> 
> <aspeed unit="mph">2880</aspeed>
> 
> The difficult units are GURPS-specific, anyway, like Maint. 
> in hours between checks or man-hours per day, or volume in 
> dton/VSP/cf.

While Unit is great for generic, my point it is GURPS Vehicles and there 
is only one unit that should be in <aspeed> so unit is redundant (but 
should be in the DTD documentation which unit type should be in there.) 
unit is only necessary if you want <aspeed> to also accept non mph.