While this has more to do with library than actual syntax, I install vim plugins that allow Shift-K to bring up docs for a function or keyword my cursor is over

While this has more to do with library than actual syntax, I install vim plugins that allow Shift-K to bring up docs for a function or keyword my cursor is over. I write a lot of go, and it has a relatively easy syntax, but I constantly use my docs key binding to see what a function signature is or what the function even does. There's a lot of meaning behind "read the docs". I don't just do it once, I do it all day.