Huge work, thank you! @XOleg, don't forget to insert the "special" region that you wanted. See how I made Barcelona, as an example. You basically just have to make poly file yourself by writing in coordinates of 4 points. Just remember to do it in the right order for this format - longitude, latitude. Format description here, if you need it: http://wiki.openstreetmap.org/wiki/O...er_File_Format . Put some nice name to that region and we are good to go.

Actually, both numbers correspond to remaining part, i.e. left to download, left to write. Its probably not too important, just gives some visual feedback to the user that things are moving.