[[TranslatedPages]]

= Block Downloading Of Data =

**(For experts only)**

An OSM [wikitr:/Help/Dialog/LayerList data layer] can be set to block data downloads into it.

== States ==

||= '''icon''' =||= '''state''' =||= '''osm element attribute''' =||= '''behaviour on download''' =||= '''how to set in GUI''' =||
|| [[JOSMImage(layer/osmdata_small)]] || NORMAL ||  (optional: `download='true'`)  || no special behaviour – it is possible to download data into this layer || the default state  ||
|| [[JOSMImage(warning-small)]] in the top right corner of [[JOSMImage(layer/osmdata_small)]] || BLOCKED || `download='never'` || data is downloaded into a new layer instead || not possible ||

== Code Example ==

Edit a .osm file in a text editor and use instead of the usual\\
{{{<osm version='0.6' generator='JOSM'>}}}\\
use\\
{{{<osm version='0.6' generator='JOSM' download='never'>}}}\\.

== Miscellaneous ==
The idea behind this option is for example to manage some data in private layers, e.g. things which are not yet mapped so a mapper can insert these on the map and later plan routes where the mapper visits these places. This avoids accidentally downloading OSM data into these layers (undo does not work) which renders them pretty useless as the custom points drown in the OSM data.

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