fill in the blanks :
In Open Street Map, several edits in session are saved in _________
Answers
Answer:
While you have an internet connection...
Download an area of the map (can be one or several bounding boxes)
Save the data as a .osm file on your local disk.
While you're offline without an internet connection...
Open the file
Maybe open GPS traces and overlay them on the data (This can also work fine offline)
Make changes e.g. add local information you have captured while out surveying
Save changes back to file. The file includes information about all your changes including moving and deleting data.
When you're back to an internet connection...
Open the file from your disk into JOSM
Do "File" menu > "Update Data" to re-download the areas you worked on. Resolve any conflicts (see following section)
Click upload to save the changes to the OpenStreetMap server.