Changeset

Nodes, ways, and relations created or modified in JOSM are only available locally unless they are published on a server to make them useful for other mappers. The process of publishing data is called uploading.

Because their are hunders of mappers publishing their geo-data on the OSM server it is important to track who published what for what purpose. It would be tedious for mappers to describe for every singe node and every single way why it is published. A more convenient approach is to package a group of related object and assign the package a comment instead of the individual objects. This way, if a mapper maps his or her neighborhood, he or she can upload a package of nodes and ways and assign it a comment "mapped and reviewed some ways in foo city".

In JOSM such a package is called a changeset. A changeset is a collection of related changes (new objects, object modifications, or object deletings) applied to OSM data.

Creating/opening a changeset

tbd

Closing a changeset

tbd

Listing the changes packaged in a changeset

tbd