Users often spend hours with creating ideal map compositions, based on various
web services, custom user graphics and other data sources. How to save the map
Another issue is, how to send custom map composition, or just simple user
graphics (e.g. parcel specification), zoomed into particular location?
For this, permalink has been developed. Unlinke permalink which is wildly used
among various mapping applications, we can not store information about displayed
layers into the map’s URL. For this purpose, special JSON structure with the map
content is stored on the server. The file can be also downloaded to local hard
drive. Unlink OGC WMC (which is supported by HSLayers too), every layer type
displayed in the map can be stored into this structure. User send just the link
to another user, and whole map content will be reconstructed at the other
Permalink window, which is displayed after copy of current map content is
saved to the server. User can now download the JSON structure or send the
link to another user.