2015-01-29 5:41 GMT+01:00 johnw <jo...@mac.com>: > if this is the proper term used for pipelines, then this would be the > right one, > > Otherwise, =multi (like sports) would be the best. > > but you would not need such a tag, since it would be > > substance=gas > substance:detailed=multiphase_gas > > if you keep it at two levels of detail (water, gas, oil, fuel, sewage, > heat, coolant, etc), >
I'd like to repeat once again that "substance" doesn't seem to be a nice key descriptor for values like "gas", "fuel", "heat", as it refers to physical matter/material and "heat" or "gas" or "fuel" in its actual meaning aren't materials. cheers, Martin
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