I have this kind of menu: "Level 1" has menu item "Level 2", which links to the page with "cat1" url. Then, I have node which have aliases "cat1/[nid]", hence, in my opinion, menu block (provided by "menu block" module) should appear. But it doesn't. Why?
If you haven't worked with menu block module and not familliar with it, then how can I force to show "Level 1 -> Level 2" menu part if a node with alias "cat1/[nid]" is loaded?