It means that the owner makes no representations about the survey of the property, the property lines, or about the land that the property is built on. Like "as-is", they are generally not trying to "hide" anything from the buyer - they are just stating that you purchase the home essentially at your own risk - and they make no disclosures, nor are they responsible for, any repairs, improvements, survey issues, boundary issues, etc.
Typically this is simply stated as "as-is" - however many banks/lenders require the listing agent to include "where-is" as well as a technicality.
Hope this helps!
I'm not familiar with this being a commonly acceptable real estate term but because of the property's proximity to the railroad, I believe this to mean that the buyer must accept the home's location as it is.
Not sure it could mean anything else.
Hope this helps.