The only thing I'm always struggling to understand is the documentation on docs.rs

Almost every documentation tells me the "obvious" answer like "pub type Container... A container that distributes its contents vertically." I mean, what? Aren't documentation supposed to show some examples or at least there should be some guide or something? Literally almost all documentations out there don't say much except for describing what has already been described by the name of it. If that not, it doesn't happen all the time. I thought I finally found a good documentation before scrolling down, a paragraph of maybe not more than 300 words and the rest of the page is filled with full of traits which I don't understand at all. I dunno about you guys, is it just me or is that the standard of documenting it that way or I just don't understand anything?