| 24 | | [[Image(source:trunk/images/data/relation.png,20,middle,margin-right=15,margin-bottom=5,nolink)]] A **relation** is an sequence of other nodes and ways. |
| 25 | | Every relation can have their own "tags". |
| 26 | | Relations can be used as members in other relations (nested or hierarchical structures). |
| 27 | | Each object participating in a **relation** can be assigned a **role**, for instance `stop` for a bus stop in the bus route, or `platform` for platforms related to according stop positions. |
| | 24 | [[Image(source:trunk/images/data/relation.png,20,middle,margin-right=15,margin-bottom=5,nolink)]] A **relation** is: |
| | 25 | * an sequence of other objects (nodes, ways and relations) |
| | 26 | * every relation can have their own "tags". |
| | 27 | * can be used as members in other relations (nested or hierarchical structures) |
| | 28 | * tag type=* used to define one of [http://wiki.openstreetmap.org/wiki/Types_of_relation many types of relations] |
| | 29 | |
| | 30 | Additionally, each object participating in a **relation** can be assigned a **role**, for instance "via" node and "from", "to" ways in type=restriction relation. |
