What do addresses ending in E or S alone, such as 66 S or 94 E, mean?

Question

Accepted Answer

They lie outside the five map areas and are reserved for expansions, so the base cases don't use them. Reports say they appear only in some later boxes or fan-made cases.

Sherlock Holmes Consulting Detective: The Thames Murders & Other Cases

What do addresses ending in E or S alone, such as 66 S or 94 E, mean?

Sherlock Holmes Consulting Detective: The Thames Murders & Other Cases

What do addresses ending in E or S alone, such as 66 S or 94 E, mean?