Historical Objects/Relations
Often it is useful or necessary to use relations with historical tags, e.g. for complex sites as type=site relation, for parts of a historical road as a type=collection or for listed ensembles as site or collection. Tags should be applied to the relation itself, provided that it is valid for the ensemble. Single relation members (e.g. a building) can have additional historical tags of their own, e.g. "ruins=yes".
Relations with historical background of the types type=site and type=collection will be displayed as follows:
The corresponding icon will be displayed in the centre of gravity of the member coordinates, however a bit larger than with simple objects. This requires that the historical tags belong to the relation itself (in contrast to "to the members"). Members with own historical tags will be displayed as usual with normal size. Members without own historical tags will not be shown at first.
On hovering the mouse over the big relation icon, however all relation members will be emphasized with a yellow background.
Upon holding Ctrl pressed and clicking on the big icon it is possible to click on each single relation member (while still holding Ctrl pressed), even on the previously invisible ones, and to open their context menus. Upon clicking the big icon again without pressing Ctrl, the highlighting vanishes.
These are the conditions (key/value) for site/collection/route-Relations to include their non-historic members:
abandoned:man_made=mineshaft|adit
abandoned=village
amenity=monastery
amenity=townhall&historic=yes
archaeological_site|pa
building=bunker&historic=yes
building=monastery
description=technical_monument
geological=palaeontological_site
heritage=
historic=battlefield
historic=castle|fort|palace
historic=city_gate
historic=citywalls|city_wall
historic=farm
historic=industrial
historic=mine
historic=monument
historic=quarry
historic=railway
historic:railway=
historic=technical_monument
historic=tower
landuse=quarry&historic=yes
man_made=lighthouse&historic=yes
man_made=mineshaft|adit&historic=yes
man_made=mineshaft|adit|mine&abandoned=yes
man_made=mineshaft|adit|mine&disused=yes
man_made=tower&historic=yes
man_made=water_tower&historic=yes
military=bunker&historic=yes
railway:historic=
runestone|rune_stone