Ok, I'll try how time will be! Thanks for the advice!

I do not argue Bing is not high-quality, then what kind of mop should I use? Are there aerial photos in JOSM?

Advise which substrate to use in order not to harm the Polish community?

On the Bing substrate, I’ll take a look at the account of the building registry, I can’t promise it, I use mapping as a relaxation and there’s no time to figure it out, but if there is time, I’ll take a look. Thanks.

Got it! I apologize again for the inconvenience.

That is okay! I understand how it looks from the outside :) So what in the comments to put a note for others or is it not critical?

I’m very sorry, but this is not spam, I just unload one edit due to an unstable connection. I once made 800 edits in one package and sent, at that moment there was a failure and 100 of 800 went, it was a pity for the work. I can make a note to each edit in the comment because of what I do this. So it is possible?

And what is prohibited by OSM rules?

Это комментарий к правке, чтобы другие могли понять какой объект представляет данная правка.

Ok.