Context Menu > OSM Data Layer

A Data layer contains map data objects downloaded from OpenStreetMap or created and edited by users, usually meant to upload them back to OSM. Special layer states may block this.

Context menu

OSM data layers have following context menu:

	Activate	Shift+A⤳[0–9]
	Show/Hide	Shift+S⤳[0–9]
	Delete
	Merge
	Duplicate
	Save
	Save as ...
	Export to GPX ... (only in expert mode)
	Convert To GPX Layer (only in expert mode)
	Rename Layer
	Discourage upload (only in expert mode)
	Data consistency test
	Info

Layer State

By default all actions are possible with the OSM data in a layer. But the three switches Upload, Download and Locked can change this:

Switch		Upload	Download	Locked	Behaviour
key name		upload	download	locked
	Default				No special behavior.
	Upload discouraged	false			A warning before the upload appears.
	Upload blocked	never			Uploading is not possible, the upload button is greyed out.
	Download blocked		never		The downloaded data goes into another layer which doesn't block downloads if available. Otherwise a new layer is created.
	Upload and download blocked	never	never		The combination of the two states above.
	Locked			true	This includes download=never and upload=never and additionally blocks any editing of the data.

The Upload switch can be toggled to false with Discourage upload in the context menu mentioned above. For all other states the switches must be edited in the .osm-file with a text editor. The switches are optional parts of the osm key in the second line.

# Default:
<osm version='0.6' generator='JOSM'>

# Upload discouraged: 
<osm version='0.6' generator='JOSM' upload='false'>

# Upload blocked:
<osm version='0.6' generator='JOSM' upload='never'>

# Download blocked:
<osm version='0.6' generator='JOSM' download='never'>

# Upload and download blocked:
<osm version='0.6' generator='JOSM' upload='never' download='never'>

# Locked: 
<osm version='0.6' generator='JOSM' locked='true'>

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