So if it comes to what I needed, it seems the question is SOLVED.
[Using MODX Evolution] I needed Ditto to include one same page into two lists of child resources Ditto forms on two different pages. Weblinks of at least MODX Evolution 1.0.10 allow: to have all TVs the templates of their source page have, to change templates, to put into the TVs content different from the one in TVs of their source pages.
Weblinks do have no content of their own, but for my case it is no problem. Since having TVs is enough to give Ditto stuff for forming gallery-like list of child resources on a page, my question is answered.
