<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
</head>
<body bgcolor="#FFFFFF" text="#000000">
Hi,<br>
<br>
An OSM element is normally made of one "physical" object tag and a
number of tags describing the attributes of that object or of the
other attributes (such as (fictitious example)
building:tower:antenna:gsm=yes). This applies to areas and nodes.<br>
Some people prefer to tag the attributes to a node inside an area,
like a shop on a node.<br>
If the node represents a particular place (part) inside the area,
its object tag is simply that of the inside object, like a room, a
reception desk, whatever.<br>
The problem arises when they want their node to represent the whole
area. Supposing a building, they would tag a building=yes node
inside a building=yes area and QAs would complain about finding one
building inside another.<br>
Supposing that substituting another tag for building=yes would play
havoc, what is or would be an additional attribute tag meaning "I am
the same object as that of the area enclosing me", meaning that it's
a duplicate, an alias, you call it, such as:<br>
building=yes<br>
[building:]enclosing_area_alias=yes<br>
<br>
Cheers <br>
<br>
<table>
<tbody>
<tr>
<td>André.</td>
</tr>
</tbody>
</table>
<br>
<br>
</body>
</html>