How to save all stickies at once?

I want to know if it is possible to save all stickies screenshot area at once, instead of saving one by one? Because I use to save some of them by screenshot area, and sometimes it is difficult to save a lot of them, one by one. Could they save at the deskop with different file name?

Also I want to know if it is possible to close all stickes at once, sometimes it is difficult to close a lot of them, one by one.

Grateful for your help.

There is already a way to select a group stickies and execute a command .

edited : you can bulk save to file , i removed the remark that you could not ( i later found the saved rtf in a different directory....)

Thanks a lot! It is great to know there is a way to do that.