|Apartment block entrance identificator|
|Definition:||the entrance letter on Soviet-era apartment block entrances|
Soviet-era apartment blocks have multiple entrances. They lead to different sections of the block and serve similarly to house numbers. They, however, can be marked by entrance letters which can be separate from the and the street number and be situated on different streets.
- Zhelezni vrata 24, entrance А (Bulgarian: Железни врата 24, вход А)
- addr:street=Zhelezni vrata + addr:housenumber=24 + addr:entrance=А